5. Multiplication of decimals |
Each side of a square is 1.3 meters. How much is the sum of its four sides? We can add or subtract.
1,3
x 4
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5,2
When a whole number is multiplied by 10, we can simply add a zero to the end. Example: 65 x 10 = 650
When a whole number is multiplied by 100, we add two zeros to the end: Example: 7 x 100 = 700
When a whole number is multiplied by 1000, we add three zeros to the end. Example: 523 x 1000 = 523000
Solve these multiplications: