Solve the subtraction exercise,
using two jumps on the number line below:
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Solve the subtraction exercise,
using two jumps on the number line below:
To solve , we will use the number line, making two jumps from 95 to 87.
First, identify the numbers on the number line:
Step 1: Make the first jump to the next round number below 95, which is 90. Calculate this jump:
Step 2: Make the second jump from 90 to 87. Calculate this jump:
Add the two jumps together to find the total subtraction:
Therefore, the missing number is .
The correct answer is .
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
Two jumps make the calculation much easier! Instead of mentally calculating 95 - 87 directly, we break it into friendly numbers like 95→90 and 90→87. This prevents counting errors.
You can still use two jumps! For example, with 83 - □ = 76, you could jump 83→80 (subtract 3), then 80→76 (subtract 4). Total: .
Look at your start and end numbers! Since 95 is bigger than 87, you move LEFT (toward smaller numbers). This means you're subtracting.
Yes! You could break it into even smaller jumps if needed. The key is to add up all your jump distances to get the final answer.
Substitute back into the original equation: . If both sides match, you're correct!
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