Subtraction
Time
Addition
Before & After
3 Group Addition
100
8-4
What is 4
100
11 in the morning
What is 11:00am
100
27+27
What is 54
100
____127____
What is 126 and 128
100
5 + 5 2 ______
What is 12
200
21-13
What is 8
200
half past 8 at night
What is 8:30pm
200
55+64
What is 119
200
___310___
What is 309 and 311
200
9 +8 +2 ____
What is 19
300
41-24
What is 17
300
Quarter to 6 at night
What is 5:45pm
300
34+39
What is 73
300
___745___
What is 744 and 746
300
12 +15 +13 _____
What is 40
400
73-37
What is 36
400
Quarter after 9 in the morning
What is 9:00am
400
79+14
What is 93
400
___999___
What is 998 and 1000
400
36 +10 +12 _____
What is 58
500
76-48
What is 28
500
20 after 12 in the afternoon
What is 12:20pm
500
48+36
What is 84
500
___673___
What is 672 and 674
500
571 +325 +210
What is 996
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