S1 Math Assessment: Decimals, Sequences & More
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Questions and Answers

Within the domain of decimal arithmetic, the cumulative sum of $142.7$ and $88.4$ manifests as ______, thus exemplifying the additive properties inherent to real number manipulation.

231.1

Given a scalar quantity of $8.5$ undergoing multiplicative transformation by a factor of $9$, the resultant product, indicative of scaled magnitude, is precisely ______.

76.5

In the context of metric differential analysis, the disparity in stature between Margaret, quantified at $1.41$ meters, and Kevin, registering at $1.23$ meters, reveals a height differential of ______ meters favoring Margaret.

0.18

Considering the economic transactional framework wherein a digital album procurement incurs a cost of $£8.49$ per unit, the aggregate financial burden for the acquisition of three such albums escalates to ______, thereby delineating the principles of scalar multiplication within a monetary context.

<p>£25.47</p> Signup and view all the answers

Within an educational procurement scenario, given that the collective expenditure for nine mathematical textbooks amounts to $£51.12$, the unitary cost attributable to each individual textbook, reflective of equitable cost distribution, is delineated as ______.

<p>£5.68</p> Signup and view all the answers

In the expression $\frac{a}{b} + \frac{c}{d}$, where $a, b, c, d \in \mathbb{Z}$ and $b, d \neq 0$, the resultant fraction can be simplified to its lowest terms if the greatest common divisor of the numerator and ______ is greater than 1.

<p>denominator</p> Signup and view all the answers

Given two mixed fractions $x \frac{y}{z}$ and $p \frac{q}{r}$, where $x, y, z, p, q, r \in \mathbb{N}$, the most efficient method to compute their sum, while minimizing the risk of arithmetic errors especially with large numbers, typically involves converting them into ______ before performing the addition.

<p>improper fractions</p> Signup and view all the answers

When calculating the perimeter of a rectangle with fractional side lengths $l$ and $w$, expressing the result as a mixed number $a \frac{b}{c}$ provides insight into the whole number of units ($a$) and the remaining ______ part ($\frac{b}{c}$) of the perimeter measured beyond that whole number.

<p>fractional</p> Signup and view all the answers

Consider a scenario where a vehicle travels for $x \frac{y}{z}$ hours and then continues for $p \frac{q}{r}$ hours, with $x, y, z, p, q, r \in \mathbb{Q}^+$. Determining the total travel time necessitates the consolidation of these time intervals, which relies on the fundamental arithmetic operation of ______ applied to mixed numbers.

<p>addition</p> Signup and view all the answers

Suppose a rectangular plot has a length specified as $a\frac{b}{c}$ units and a width of $d\frac{e}{f}$ units, where $a, b, c, d, e, f \in \mathbb{N}$. To determine the effect on the perimeter if both dimensions are increased by a factor of $k$, the initial and final perimeters must be calculated using ______ arithmetic operations with fractions before comparing the results.

<p>distributive</p> Signup and view all the answers

Given the product $\frac{1}{4} \times \frac{4}{7}$, the resultant fraction, when expressed in its simplest form requires the identification of the ______ between the numerator of the first fraction and the denominator of the second.

<p>cancellation</p> Signup and view all the answers

In evaluating the expression $3 \frac{1}{4} \times 1 \frac{1}{3}$, one must first convert the mixed numbers to improper fractions, perform the ______ of the resulting numerators and denominators, and then simplify the result back into a mixed number if necessary.

<p>multiplication</p> Signup and view all the answers

When dividing $\frac{5}{12} \div \frac{5}{3}$, the operation is transformed into multiplication by the ______ of the second fraction, allowing for simplification before or after multiplication.

<p>reciprocal</p> Signup and view all the answers

To solve $5 \div 1 \frac{1}{4}$, convert the mixed number to an ______ fraction before inverting and multiplying, which enables the calculation of the quotient.

<p>improper</p> Signup and view all the answers

In simplifying $\frac{2}{5} \div \frac{9}{10}$, multiplying by the reciprocal uncovers opportunities for ______ between the numerator of the first fraction and the denominator of the second and vice versa, facilitating the reduction to the simplest form.

<p>cross-cancellation</p> Signup and view all the answers

Evaluate $2 \frac{7}{8} \div 1 \frac{3}{9}$. Upon converting to improper fractions and transforming division into multiplication by the reciprocal, watch for ______ factors to simplify and find the answer more efficiently.

<p>common</p> Signup and view all the answers

The phrase 'expressed as a fraction in its simplest form' implies that the numerator and the denominator of the resultant fraction must be ______, sharing no common factors other than 1.

<p>coprime</p> Signup and view all the answers

The reciprocal of a fraction $\frac{a}{b}$, where $a$ and $b$ are non-zero integers, is denoted as $\frac{b}{a}$, illustrating the ______ property in the context of multiplicative inverses.

<p>inversion</p> Signup and view all the answers

Given the recurrence relation $a_{n+2} = p a_{n+1} + q a_n$, where $a_0 = 1$, $a_1 = 2$, $a_2 = 5$, and $a_3 = 12$, the values of $p$ and $q$ are such that $p + q = $ ______.

<p>3</p> Signup and view all the answers

In the context of continued fractions, the convergents of a real number provide increasingly accurate rational approximations. If the continued fraction representation of $\pi$ is given by $[3; 7, 15, 1, 292, ...]$, the third convergent, obtained by truncating the continued fraction after the third term, expressed as a simplified fraction, has a denominator equal to ______.

<p>333</p> Signup and view all the answers

Consider the equation $ax + b = c$, where $a$, $b$, and $c$ are real numbers. Assuming $a \neq 0$, if the solution for $x$ is such that $x = \frac{c-b}{a}$, and we know that $a$, $b$, and $c$ form an arithmetic sequence in that order with a common difference of $d$, then $x$ is equal to ______.

<p>-1</p> Signup and view all the answers

Given the geometric sequence defined by $a_n = a_1 r^{n-1}$, where $a_1$ is the first term and $r$ is the common ratio, if the sum of the first two terms ($a_1 + a_2$) is 15 and the sum of the next two terms ($a_3 + a_4$) is 60, then the common ratio $r$ is equal to ______.

<p>4</p> Signup and view all the answers

Suppose you have the infinite series $\sum_{n=1}^{\infty} ar^{n-1}$, where $a$ is the first term and $r$ is the common ratio. If $a = \frac{1}{2}$ and the sum of the series converges to $\frac{3}{4}$, then the value of $r$ is ______.

<p>0.5</p> Signup and view all the answers

Consider a recursive sequence defined by $a_{n+1} = \frac{1}{2} \left( a_n + \frac{A}{a_n} \right)$, where $A > 0$. This sequence converges to $\sqrt{A}$. If $a_0 = 1$ and $a_2 = \frac{17}{12}$, then $A$ is ______.

<p>2</p> Signup and view all the answers

The expression $\frac{x^3 - 8}{x - 2}$ can be simplified to a quadratic expression. When $x \neq 2$, the value of this simplified quadratic expression when $x = 2$ is ______.

<p>12</p> Signup and view all the answers

If $\frac{a}{b} = \frac{3}{4}$ and $\frac{c}{d} = \frac{5}{6}$, the value of the expression $\frac{ac}{bd} + \frac{9}{16}$ is ______.

<p>1.75</p> Signup and view all the answers

Given the equation $2^{2x} - 3 \cdot 2^{x+1} + 8 = 0$, the sum of the distinct real solutions for $x$ is ______.

<p>1</p> Signup and view all the answers

Express the repeating decimal $0.1\overline{6}$ as a simplified fraction. The denominator of the fraction in its reduced form is ______.

<p>6</p> Signup and view all the answers

Flashcards

Decimal Addition

Adding numbers with a decimal point. Keep place values aligned.

Decimal Subtraction

Subtracting numbers with a decimal point. Keep place values aligned.

Decimal Multiplication

Multiplying a number by a decimal.

Decimal Division

Dividing a decimal number. Keep the decimal point in the same column.

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Perimeter

The total distance around the outside of a 2D shape.

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Adding fractions (same denominator)

Adding fractions with the same denominator involves adding the numerators and keeping the denominator the same.

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Subtracting fractions (same denominator)

Subtracting fractions with the same denominator involves subtracting the numerators and keeping the denominator the same.

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Simplest form of a fraction

A fraction is in simplest form when the numerator and denominator have no common factors other than 1.

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Adding mixed numbers

To add mixed numbers, add the whole numbers and fractions separately, then combine. Simplify if needed.

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Perimeter of a rectangle

The perimeter of a rectangle is found by adding the lengths of all its sides. Since opposite sides are equal, it's 2*(length + breadth).

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Sequence

A list of numbers that follow a specific pattern or rule.

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Formula (for a sequence)

A mathematical rule that defines the terms of a sequence.

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Percentage (%)

Represents 'out of 100'. It's a way of expressing a fraction with a denominator of 100.

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Decimal

A number expressed in base-10 notation, containing a decimal point.

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Fraction

A way to represent a part of a whole, expressed as a ratio between two numbers (numerator and denominator).

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Simplify

To reduce an expression to its simplest form by combining like terms.

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Equation

A mathematical statement that shows the equality between two expressions.

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Solve (an equation)

To find the value of the variable that makes the equation true.

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Improper Fraction

A fraction where the numerator is greater than the denominator.

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Mixed Number

A number consisting of a whole number and a proper fraction.

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Multiplying Fractions

Multiply the numerators (top numbers) to get the new numerator, and multiply the denominators (bottom numbers) to get the new denominator.

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Simplifying Fractions

To simplify a fraction, divide both the numerator and the denominator by their greatest common factor (GCF).

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Multiplying Mixed Numbers

Convert the mixed number to an improper fraction before multiplying.

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Dividing Fractions

Flip the second fraction (the divisor) and then multiply.

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Factor

A number that divides another number without leaving a remainder.

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Greatest Common Factor (GCF)

The largest factor that two or more numbers share.

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Study Notes

  • The document is an S1 November math assessment revision, covering Decimals, Sequences & Formulae, Fractions, Decimals & Percentages, Expressions, Equations, Operations with Fractions, and Perimeter, Area & Volume.

Decimals

  • Task: Complete various addition, subtraction, multiplication, and division calculations involving decimals.
  • Problems involve calculations such as 3.2 + 4.4, 142.7 + 88.4, 8.5 × 9, and 36.5 ÷ 5.
  • Task: Solve word problems involving decimals.
  • One problem includes finding the height difference between Margaret (1.41 m) and Kevin (1.23 m).
  • The cost to download 3 albums at £8.49 each is to be determined.
  • Determine the cost of a math textbook if 9 cost £51.12.
  • Task: calculate the total cost of a shirt (£7.25), trousers (£19.99), a tie (£4), and shoes (£25.85).

Sequences & Formulae

  • Task: Determine the next 3 terms in a given sequence and describe the rule.
  • Examples of sequences include 5, 7, 9, 11,... and 9, 14, 19, 24,...
  • Task: Find a specific term in a sequence using a given formula.
  • Examples include finding the 5th term using the formula 2n + 2 and the 4th term using the formula 5n - 1

Fractions, Decimals & Percentages

  • Task: Complete a table converting percentages (50%, 25%, 75%, 10%, 20%) to fractions and decimals.
  • 50% corresponds to the fraction 1/2
  • 25% corresponds to the decimal 0.25
  • Task: Convert decimals to percentages.
  • Task: Convert percentages to decimals.
  • Task: Convert decimals to fractions.
  • Task: Convert fractions to decimals.
  • Task: Convert percentages to fractions.

Expressions

  • Task: simplify algebraic expressions by combining like terms.
  • Examples: 3a + 2b + 4a + b and 7m + 7p + 8m + p + 2p
  • Task: simplify more complex algebraic expressions.
  • Involving terms with exponents such as 2r² + r² + 3r² and 7u² + u² + u²

Equations

  • Task: solve for x in many linear equations
  • E.g. x + 2 = 5
  • E.g. 2x = 16

Operations with Fractions

Mixed Numbers and Improper Fractions

  • Task: Change improper fractions to mixed numbers.
  • Task: Change mixed numbers to improper fractions.
  • Task: Adding and subtracting fractions, expressing the result in simplest form.
  • Task: Multiply fractions, also simplifying.
  • Task: Divide Fractions, expressing as single fractions.

Perimeter, Area & Volume

Area of 2D Shapes

  • The student must calculate the areas of various 2D shapes like square disks, Scottish flags, double-glazed windows, square-shaped conference rooms, triangular sandwiches & advertisement boards.
  • The student must find which triangle has the biggest area
  • The student must then find out by how many meters is one bigger than the other

Composite Area & Perimeter

  • The student must calculate the total area and perimeter involving a range of shapes and sizes

Volume

  • The student must calculate the volume of each cuboid or cube

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Description

S1 math revision covering decimals, sequences, and formulas. It includes practice problems and word problems. Topics cover fractions, percentages, expressions, equations, and geometry.

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