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.
4 • 0 = _______ 9 • 0 = _______ 1 • 0 = _______ 5 • 0 = _______ 2 • 0 = _______
8 • 0 = _______ 3 • 0 = _______ 6 • 0 = _______ 10 • 0 = _______ 7 • 0 = _______
(3) Multiply.
10 • 1 = _______ 5 • 1 = _______ 4 • 1 = _______ 7 • 1 = _______ 8 • 1 = _______
1 • 1 = _______ 9 • 1 = _______ 3 • 1 = _______ 2 • 1 = _______ 6 • 1 = _______
(4) Compare the expressions in the table and fill in with <, > or =.
| 10 • 0 4 | 3 + 0 9 | 6 • 1 2 | 5 + 1 8 |
| 9 10 • 0 | 4 2 + 0 | 8 1 • 1 | 6 7 + 1 |
| 7 • 0 1 | 7 + 0 1 • 0 | 6 • 1 10 | 4 + 1 1 • 1 |
(5) Calculate.
| 3 • 0 = ____ | 4 • 1 = ____ | 28 • 0 = ____ | 8 • 1 = ____ |
| 0 • 1 = ____ | 30 • 0 = ____ | 25 • 1 = ____ | 14 • 0 = ____ |
| 19 • 0 = ____ | 5 • 1 = ____ | 10 • 0 = ____ | 7 • 1 = ____ |
| 18 • 1 = ____ | 24 • 0 = ____ | 15 • 1 = ____ | 13 • 0 = ____ |
| 6 • 0 = ____ | 20 • 1 = ____ | 1 • 1 = ____ | 29 • 0 = ____ |
| 11 • 1 = ____ | 26 • 0 = ____ | 16 • 1 = ____ | 23 • 0 = ____ |
(6) Enter the missing number.
| 53 • = 53 | 35 • = 0 | 86 • = 0 | 7 • = 7 |
| • 7 = 7 | • 79 = 0 | • 77 = 0 | • 20 = 20 |
| 39 • = 39 | 29 • = 0 | 53 • = 0 | 89 • =89 |
| • 21 = 0 | • 34 = 0 | • 88 = 0 | • 94 = 94 |
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