# Subtraction Shortcuts

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```					Subtraction Shortcuts and Tips
By Monica Yuskaitis

Subtracting Across Zeros

302 198

Step 1 – Borrow 1 from the 30

302 198

Step 2 – Cross out the 30

302 198

Step 3 – Write a 29 above the 30 2 9

302 198

Step 4 – Write a 1 in front of the 2 2 9

3 0 12 198

Step 5 – Subtract 8 from 12 2 9

3 0 12 198 4

Step 6 – Subtract 9 from 9 2 9

3 0 12 198 04

Step 7 – Subtract 1 from 2 2 9

3 0 12 198 104

We’re Finished 2 9

3 0 12 198 104

Second Example

8002 3765

Step 1 – Borrow 1 from 800

8002 3765

Step 2 – Cross out the 800

8002 3765

Step 3 – Write 799 above the 800

7 9 9

8002 3765

Step 4 – Write a 1 next to the 2

7 9 9

8 0 0 12 3765

Step 5 – Subtract 5 from the 12

7 9 9

8 0 0 12 3765 7

Step 6 – Subtract 6 from the 9

7 9 9

8 0 0 12 3765 37

Step 7 – Subtract 6 from the 9

7 9 9

8 0 0 12 3765 2 37

Step 7 – Subtract 3 from the 7

7 9 9

8 0 0 12 3765 4 2 37

We’re Finished

7 9 9

8 0 0 12 3765 4 2 37

6 9 9

7 0 0 15 2836 4 1 69

It’s Your Turn Again

8 9 9

9 0 0 14 7956 1 0 48

Subtraction Tips

Never subtract the top number from the bottom number

613 279 466

Never borrow unless you need to 5

9 6 12 841

Practice your subtraction facts

–9= 9 18 – 7 = 11 16 – 8 = 8 14 – 8 = 6 12 – 9 = 3 11 – 3 = 8 15 – 7 = 8 9 – 3 = 6
18

– 5 = 13 18 – 3 = 15 16 – 7 = 9 14 – 6 = 8 12 – 4 = 8 11 – 7 = 4 15 – 6 = 9 9 – 5 = 4
18

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