| Adding whole tens (2 addends) numbers - sum 80 or less The number of all possible operations is equal to 46 | |
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| Solve. | |
0 + 30 = __________ 70 + 10 = __________ 60 + 0 = __________ 50 + 10 = __________ 60 + 20 = __________ 20 + 10 = __________ 0 + 60 = __________ 0 + 70 = __________ 30 + 0 = __________ 10 + 40 = __________ 0 + 40 = __________ 20 + 30 = __________ 40 + 20 = __________ 50 + 30 = __________ 30 + 40 = __________ 10 + 10 = __________ 10 + 20 = __________ 20 + 20 = __________ 10 + 30 = __________ 30 + 50 = __________ 30 + 10 = __________ 20 + 60 = __________ 60 + 10 = __________ | 60 + 10 = __________ 20 + 0 = __________ 50 + 0 = __________ 0 + 20 = __________ 0 + 0 = __________ 0 + 50 = __________ 30 + 30 = __________ 0 + 10 = __________ 40 + 40 = __________ 50 + 20 = __________ 20 + 40 = __________ 70 + 0 = __________ 30 + 20 = __________ 10 + 60 = __________ 10 + 50 = __________ 20 + 50 = __________ 0 + 80 = __________ 40 + 10 = __________ 40 + 0 = __________ 10 + 0 = __________ 10 + 70 = __________ 40 + 30 = __________ 80 + 0 = __________ |
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| Adding whole tens (2 addends) numbers - sum 80 or less The number of all possible operations is equal to 46 | |
|---|---|
| The answer. | |
0 + 30 = 30 70 + 10 = 80 60 + 0 = 60 50 + 10 = 60 60 + 20 = 80 20 + 10 = 30 0 + 60 = 60 0 + 70 = 70 30 + 0 = 30 10 + 40 = 50 0 + 40 = 40 20 + 30 = 50 40 + 20 = 60 50 + 30 = 80 30 + 40 = 70 10 + 10 = 20 10 + 20 = 30 20 + 20 = 40 10 + 30 = 40 30 + 50 = 80 30 + 10 = 40 20 + 60 = 80 60 + 10 = 70 | 60 + 10 = 70 20 + 0 = 20 50 + 0 = 50 0 + 20 = 20 0 + 0 = 0 0 + 50 = 50 30 + 30 = 60 0 + 10 = 10 40 + 40 = 80 50 + 20 = 70 20 + 40 = 60 70 + 0 = 70 30 + 20 = 50 10 + 60 = 70 10 + 50 = 60 20 + 50 = 70 0 + 80 = 80 40 + 10 = 50 40 + 0 = 40 10 + 0 = 10 10 + 70 = 80 40 + 30 = 70 80 + 0 = 80 |
| Copying permission: You are free to copy this worksheet to any number of students for their mathematics work. Do not distribute on websites, books, or any such material without permission. Copyright almanahj.com/us | |