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Questions and Answers
What is a number line used for?
How many spaces do you jump forward to add 5 starting from the number 3?
In the word problem, 'There are 10 birds in a tree. 4 more birds come to the tree. How many birds are there now?', what operation do you perform to find the answer?
Which strategy can help students solve word problems effectively?
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When adding using a number line, what is the first step?
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Study Notes
First Grade Adding 5's and 4's
Using Number Lines
- Definition: A number line is a visual representation of numbers in a straight line, allowing easy addition and subtraction.
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Adding 5's:
- Start at the first number.
- Jump forward 5 spaces for each addition:
- Example: From 3, jump to 8 (3 + 5 = 8).
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Adding 4's:
- Start at the first number.
- Jump forward 4 spaces for each addition:
- Example: From 6, jump to 10 (6 + 4 = 10).
- Visualization: Encourage students to draw their own number lines to see the jumps clearly.
Word Problems With Addition
- Understanding Word Problems: Teach students to identify key information and determine what is being asked.
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Structure of Word Problems:
- Identify the starting number.
- Determine how many to add (either 4 or 5).
- Calculate the total.
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Examples:
- 5's Word Problem: "If I have 7 apples and I buy 5 more, how many apples do I have now?" (7 + 5 = 12).
- 4's Word Problem: "There are 10 birds in a tree. 4 more birds come to the tree. How many birds are there now?" (10 + 4 = 14).
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Key Strategies:
- Use drawings to visualize the problem.
- Encourage students to write out the equation.
- Practice with various scenarios to reinforce skills.
Using Number Lines
- A number line visually represents numbers in a straight line, facilitating addition and subtraction.
- Adding 5's involves starting at a given number and jumping forward 5 spaces for each addition.
- For example, starting from 3 and jumping 5 spaces results in 3 + 5 = 8.
- Adding 4's follows a similar approach, beginning at a chosen number and making 4-space jumps.
- For instance, starting from 6 and jumping 4 spaces gives 6 + 4 = 10.
- Visual aids like drawing personal number lines can help students understand the jumps more effectively.
Word Problems With Addition
- Understanding word problems entails recognizing key information and clarifying the question being asked.
- The structure of word problems includes identifying the initial number, the amount to add (4 or 5), and then calculating the total.
- An example of a 5's word problem: "If I have 7 apples and buy 5 more, how many apples do I have?" (7 + 5 = 12).
- An example of a 4's word problem: "There are 10 birds in a tree. 4 more come to the tree. How many birds are there now?" (10 + 4 = 14).
- Key strategies for solving word problems include using drawings for visualization and writing out the equations explicitly.
- Practicing various scenarios reinforces addition skills and enhances problem-solving abilities.
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Description
This quiz focuses on teaching first graders how to add using number lines and solve simple word problems involving additions of 4 and 5. Students will learn to visualize their calculations and understand key terms in word problems. Practicing these skills will solidify their foundational math abilities.