Subtraction Shortcuts and Tips

5/7/04


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Table of Contents

Subtraction Shortcuts and Tips

Subtracting Across Zeros

Step 1 – Borrow 1 from the 30

Step 2 – Cross out the 30

Step 3 – Write a 29 above the 30

Step 4 – Write a 1 in front of the 2

Step 5 – Subtract 8 from 12

Step 6 – Subtract 9 from 9

Step 7 – Subtract 1 from 2

We’re Finished

Second Example

Step 1 – Borrow 1 from 800

Step 2 – Cross out the 800

Step 3 – Write 799 above the 800

Step 4 – Write a 1 next to the 2

Step 5 – Subtract 5 from the 12

Step 6 – Subtract 6 from the 9

Step 7 – Subtract 6 from the 9

Step 7 – Subtract 3 from the 7

We’re Finished

It’s Your Turn

It’s Your Turn Again

Subtraction Tips

Never subtract the top number from the bottom number

Never borrow unless you need to

Practice your subtraction facts

Author: CCS

Email: someone@microsoft.com

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