Multiplication by 0 and 1
(1) Complete the sentences.
A number multiplied by ____ gives zero.
If a number is multiplied by ____ it stays the same.
(2) Multiply.
10 • 0 = _______ 3 • 0 = _______ 4 • 0 = _______ 2 • 0 = _______ 7 • 0 = _______
6 • 0 = _______ 5 • 0 = _______ 8 • 0 = _______ 9 • 0 = _______ 1 • 0 = _______
(3) Multiply.
4 • 1 = _______ 3 • 1 = _______ 5 • 1 = _______ 10 • 1 = _______ 7 • 1 = _______
1 • 1 = _______ 6 • 1 = _______ 2 • 1 = _______ 9 • 1 = _______ 8 • 1 = _______
(4) Compare the expressions in the table and fill in with <, > or =.
| 7 • 0 4 | 3 + 0 5 | 6 • 1 8 | 10 + 1 1 |
| 1 2 • 0 | 5 3 + 1 | 6 4 • 1 | 7 10 + 1 |
| 9 • 0 2 | 6 + 0 0 • 0 | 3 • 1 8 | 9 + 1 10 • 0 |
(5) Calculate.
| 19 • 0 = ____ | 17 • 1 = ____ | 8 • 0 = ____ | 23 • 1 = ____ |
| 9 • 0 = ____ | 25 • 1 = ____ | 6 • 0 = ____ | 10 • 1 = ____ |
| 24 • 1 = ____ | 30 • 0 = ____ | 13 • 1 = ____ | 28 • 0 = ____ |
| 26 • 1 = ____ | 1 • 0 = ____ | 18 • 0 = ____ | 3 • 1 = ____ |
| 7 • 0 = ____ | 11 • 1 = ____ | 27 • 0 = ____ | 0 • 1 = ____ |
| 15 • 0 = ____ | 21 • 1 = ____ | 22 • 1 = ____ | 14 • 0 = ____ |
(6) Enter the missing number.
| 47 • = 47 | 70 • = 0 | 57 • = 0 | 55 • = 55 |
| • 70 = 70 | • 80 = 0 | • 93 = 93 | • 13 = 0 |
| 67 • = 0 | 60 • = 60 | 44 • = 44 | 76 • =0 |
| • 23 = 23 | • 64 = 0 | • 29 = 29 | • 92 = 0 |
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