| Grade 1: Missing addend - sums with 20 The number of all possible operations is equal to 42 | |
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| Solve. | |
________ + 11 = 20 ________ + 20 = 20 ________ + 0 = 20 ________ + 2 = 20 ________ + 5 = 20 ________ + 10 = 20 ________ + 16 = 20 ________ + 17 = 20 ________ + 15 = 20 ________ + 19 = 20 ________ + 13 = 20 ________ + 6 = 20 ________ + 4 = 20 ________ + 12 = 20 ________ + 9 = 20 ________ + 14 = 20 ________ + 18 = 20 ________ + 7 = 20 ________ + 8 = 20 ________ + 3 = 20 ________ + 1 = 20 | 17 + ________ = 20 11 + ________ = 20 7 + ________ = 20 14 + ________ = 20 19 + ________ = 20 18 + ________ = 20 15 + ________ = 20 0 + ________ = 20 12 + ________ = 20 13 + ________ = 20 4 + ________ = 20 2 + ________ = 20 20 + ________ = 20 16 + ________ = 20 6 + ________ = 20 10 + ________ = 20 5 + ________ = 20 8 + ________ = 20 1 + ________ = 20 9 + ________ = 20 3 + ________ = 20 |
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| Grade 1: Missing addend - sums with 20 The number of all possible operations is equal to 42 | |
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| The Answer. | |
9 + 11 = 20 0 + 20 = 20 20 + 0 = 20 18 + 2 = 20 15 + 5 = 20 10 + 10 = 20 4 + 16 = 20 3 + 17 = 20 5 + 15 = 20 1 + 19 = 20 7 + 13 = 20 14 + 6 = 20 16 + 4 = 20 8 + 12 = 20 11 + 9 = 20 6 + 14 = 20 2 + 18 = 20 13 + 7 = 20 12 + 8 = 20 17 + 3 = 20 19 + 1 = 20 | 17 + 3 = 20 11 + 9 = 20 7 + 13 = 20 14 + 6 = 20 19 + 1 = 20 18 + 2 = 20 15 + 5 = 20 0 + 20 = 20 12 + 8 = 20 13 + 7 = 20 4 + 16 = 20 2 + 18 = 20 20 + 0 = 20 16 + 4 = 20 6 + 14 = 20 10 + 10 = 20 5 + 15 = 20 8 + 12 = 20 1 + 19 = 20 9 + 11 = 20 3 + 17 = 20 |
| Copying permission: You are free to copy this worksheet for your students and for personal use. Do not distribute on worksheets without permission. Copyright almanahj.com/us | |