Numbers

 

Checking addition sums.

 

43

+ 56

 wpe5.gif (1234 bytes)

   56

+ 43

99

   99

 

Complete the problems below.

 

15        21 35 23 23
+ 21 +  + + 44 + 64 + + 19 + 

36

36 79 87 42 42
29 44 87
+ 64 +  + 57 + 25 + + + 11 +
93 82 63 63

 

Complete the problems below.

 

Add the ones.

Tens Ones
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2 5
1 3
3 8
+________

Regroup!

Tens Ones
2 5
1 3
4 8
+________
6

Add the tens.

Tens Ones
1
2 5
1 3
4 8
+________
6

 

12 15 13 19 12 14
25 23 39 23 43 35
+ 37 + 39 + 44 + 34 + 38 + 47
spacer.gif (42 bytes)
11 29 17 12 16 13
28 27 19 18 26 38
+ 39 + 21 + 40 + 26 + 47 + 45

 

Find the difference.

 

44 68 53 37 34 54 77
- 13 - 34 - 21 - 32 - 13 - 43 - 24
spacer.gif (42 bytes)
53 89 67 97 56 79 93
- 23 - 37 - 51 - 85 - 33 - 69 -30

 
 

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