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.
1 • 0 = _______ 9 • 0 = _______ 10 • 0 = _______ 8 • 0 = _______ 4 • 0 = _______
7 • 0 = _______ 5 • 0 = _______ 2 • 0 = _______ 3 • 0 = _______ 6 • 0 = _______
(3) Multiply.
6 • 1 = _______ 5 • 1 = _______ 3 • 1 = _______ 7 • 1 = _______ 10 • 1 = _______
8 • 1 = _______ 2 • 1 = _______ 4 • 1 = _______ 9 • 1 = _______ 1 • 1 = _______
(4) Compare the expressions in the table and fill in with <, > or =.
| 8 • 0 4 | 5 + 0 10 | 9 • 1 6 | 2 + 1 1 |
| 9 2 • 0 | 5 8 + 0 | 10 7 • 1 | 3 4 + 1 |
| 7 • 0 3 | 7 + 0 1 • 0 | 8 • 1 10 | 6 + 1 5 • 0 |
(5) Calculate.
| 24 • 0 = ____ | 14 • 1 = ____ | 7 • 1 = ____ | 27 • 0 = ____ |
| 9 • 1 = ____ | 15 • 0 = ____ | 26 • 0 = ____ | 20 • 1 = ____ |
| 28 • 0 = ____ | 19 • 1 = ____ | 10 • 0 = ____ | 8 • 1 = ____ |
| 6 • 1 = ____ | 17 • 0 = ____ | 12 • 1 = ____ | 0 • 0 = ____ |
| 25 • 0 = ____ | 30 • 1 = ____ | 2 • 1 = ____ | 23 • 0 = ____ |
| 5 • 0 = ____ | 4 • 1 = ____ | 18 • 0 = ____ | 16 • 1 = ____ |
(6) Enter the missing number.
| 51 • = 51 | 85 • = 0 | 6 • = 0 | 40 • = 40 |
| • 49 = 49 | • 95 = 0 | • 85 = 85 | • 10 = 0 |
| 79 • = 0 | 46 • = 46 | 8 • = 0 | 88 • =88 |
| • 41 = 41 | • 78 = 0 | • 17 = 17 | • 90 = 0 |