Show:
Adding Small
Adding Big
Subtracting Small
Subtracting Big
Working backward
100
9 +7
16
100
4 2 +5 1
93
100
1 7 - 9
8
100
6 9 -4 8
21
100
Jim gave 15 sheets of paper to Ray. He has 15 sheets of paper left. How many sheets of paper did he start with?
15 + 15 = 30 sheets of paper
200
91 +3
94
200
1 8 +7 9
97
200
7 4 - 3
71
200
5 9 -4 7
12
200
Jane has 5 flowers. She gave 10 to Bill and 5 to Jon. How many flowers did Jane start with?
5 + 10 + 5 = 20 flowers
300
64 +20
84
300
6 2 6 +2 9
97
300
6 7 - 3
64
300
8 0 -6 2
18
300
Kate had a box of toy cars. She gave 12 to Sam. Then she gave 13 cars to Tom. Kate has 14 cars left. How many cars did she have to start with?
12 + 13 + 14 = 39 toy cars
400
55 +30
85
400
3 4 1 5 +2 3
72
400
9 5 -2 0
75
400
4 2 -3 5
7
400
A store has 19 apples left. Some customers bought 27 apples and 10 apples earlier. How many apples did the store begin with that day?
19 + 27 + 10 = 56