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.
7 • 0 = _______ 6 • 0 = _______ 2 • 0 = _______ 5 • 0 = _______ 10 • 0 = _______
3 • 0 = _______ 1 • 0 = _______ 8 • 0 = _______ 4 • 0 = _______ 9 • 0 = _______
(3) Multiply.
10 • 1 = _______ 1 • 1 = _______ 7 • 1 = _______ 4 • 1 = _______ 3 • 1 = _______
8 • 1 = _______ 5 • 1 = _______ 2 • 1 = _______ 9 • 1 = _______ 6 • 1 = _______
(4) Compare the expressions in the table and fill in with <, > or =.
| 6 • 0 2 | 1 + 0 5 | 9 • 1 8 | 3 + 1 10 |
| 3 2 • 0 | 1 6 + 1 | 4 9 • 1 | 10 7 + 1 |
| 4 • 0 7 | 5 + 0 0 • 0 | 7 • 1 6 | 5 + 1 7 • 1 |
(5) Calculate.
| 27 • 1 = ____ | 24 • 0 = ____ | 4 • 1 = ____ | 30 • 0 = ____ |
| 14 • 1 = ____ | 23 • 0 = ____ | 2 • 1 = ____ | 19 • 0 = ____ |
| 5 • 1 = ____ | 3 • 0 = ____ | 12 • 1 = ____ | 29 • 0 = ____ |
| 6 • 1 = ____ | 7 • 0 = ____ | 15 • 0 = ____ | 25 • 1 = ____ |
| 13 • 0 = ____ | 17 • 1 = ____ | 22 • 0 = ____ | 1 • 1 = ____ |
| 20 • 1 = ____ | 11 • 0 = ____ | 10 • 1 = ____ | 26 • 0 = ____ |
(6) Enter the missing number.
| 55 • = 55 | 90 • = 0 | 68 • = 0 | 42 • = 42 |
| • 78 = 78 | • 86 = 0 | • 85 = 0 | • 10 = 10 |
| 80 • = 80 | 30 • = 0 | 16 • = 0 | 72 • =72 |
| • 13 = 0 | • 35 = 0 | • 1 = 0 | • 72 = 72 |
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