Grade 4 - Progress in Mathematics

Addition and Subtraction Practice

3-10

To add or subtract larger numbers:

• Align the addends or align the
  minuend and subtrahend.


• Start by adding or subtracting
  at the right.


• Regroup as necessary.

Add: $ 567.86 
$ 341.95. Subtract: 87,731 65,954.

16 12

1 1 1 6 6 2 11

$56 7.8 6 8 7,73 1


 3 4 1.9 5 6 5 , 9 5 4

$90 9.8 1 2 1,77 7

Add: 36,428 
83,985 
759. Subtract: $ 490.00 $ 478.81.

1 2 1 (^299)
3 6 , 4 2 8 8 10 10 10
8 3 , 9 8 5 $ 4 9 0. 0 0

7 5 9  4 7 8.8 1
1 2 1 , 1 7 2 $ 1 1. 1 9
Choose a method to estimate. Then add or subtract.
Watch for
or .

1. 42,937 2. 32,864 3. 85,963 4. $ 562.43
   
   11,426
   94,828
   28,279
   680.79


2. 94,361 6. 75,937 7. 82,616 8. $ 262.71
   22,087 12,649 51,499  140.99


3. 13,584 10. 64,205 11. 82,099 12. $ 902.67
   41,592 39,811 4,157 51.81
   
   26,437
   52,406
   79,862
   235.27

Remember to estimate the sum

or difference first. Then use

your estimate to check whether

your answer is reasonable.

3.1

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