Mathematics Grade 2: Numbers and Operations

Properties of odd and even numbers: Odd numbers are not divisible by 2, while even numbers are. Odd numbers end in 1, 3, 5, 7, or 9; even numbers end in 0, 2, 4, 6, or 8.
Recognize and represent natural numbers beyond 10,000 using standard naming conventions and numerals.
Unit fractions include 1/2, 1/3, 1/4, 1/5, and 1/10, which represent one part of a whole divided into equal parts. Combine fractions with the same denominator to form wholes.
Perform addition and subtraction of two- and three-digit numbers by partitioning and regrouping using place value.
Multiply and divide one- and two-digit numbers, employing number sentences, diagrams, and arrays to address problems.
Estimate quantities in collections and the reasonableness of calculations when solving problems.
Understand the relationship between dollars and cents; represent monetary values in various ways.
Use mathematical modeling for practical problem-solving in both additive and multiplicative scenarios, including financial situations; communicate solutions effectively.
Develop algorithms to explore numbers; recognize and describe emerging patterns.

Addition and subtraction are inverse operations; understand how to apply this to partition numbers and find unknown values.
Extend knowledge of addition and subtraction facts up to 20 to enhance mental computation strategies for larger numbers.
Gain proficiency with multiplication facts for 3, 4, 5, and 10, and relate these to the corresponding division facts.

Identify metric units used in everyday measurements; make estimates based on familiar items.
Measure and compare objects using agreement on familiar metric units of length, mass, and capacity, with appropriate instruments.
Understand the relationship between formal units of time (days, hours, minutes, seconds) for estimating event durations.
Read time on analog and digital clocks to the nearest minute, understanding the correlation between hours and minutes.
Recognize angles as measures of turn, using right angles as a standard to compare other angles in daily life.

Classify and compare objects by identifying key features that make them suitable for specific uses.
Interpret and create 2D representations of environments while locating key landmarks and objects relative to one another.

Collect data for categorical and discrete numerical variables through observation; record using frequency tables or spreadsheets.
Create and compare graphical representations of data, interpreting the context through graphical analysis.
Conduct guided statistical investigations for collecting, representing, and interpreting data concerning questions of interest.

Identify everyday events related to chance, describing outcomes as ‘likely’ or ‘unlikely’; designate some as ‘certain’ or ‘impossible’ based on reasoning.
Perform repeated chance experiments to identify and describe possible outcomes, recording results and discussing variations.

Questions and Answers