Unit 9 – The four operations
Multiplying and dividing by 100
1 We can also use place value to multiply numbers by 100.
1 0
2 0
12 × 100
1
2
12 has been made 100 times as large. The digits move two places to the left to show the result of multiplying 12 by 100. Can you explain why we use two zeros as placeholders when we multiply by 100?
2 We can use what we know about place value to help divide numbers by 100.
1
2
0 1
0 2
1200 ÷ 100
1200 ÷ 100 = 12 because 1200 is made 100 times as small. The digits move two places to the right to show the result of dividing 1200 by 100.
Multiply each of these numbers by 100. 18 35 12 50
1
65
98
125
9781380050694__text.indb 125
04/05/2022 15:50
Made with FlippingBook Learn more on our blog