Decimals and place value (Edexcel GCSE Maths): Flashcards

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Decimals and place value
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Purpose of place value diagrams

Show position and value of digits in decimal numbers

Value of tenths place

0.10.1

Value of hundredths place

0.010.01

Value of thousandths place

0.0010.001

Effect of adding zeros at end of decimal, e.g., 0.760.76 vs 0.7600.760

No change in value

First step when comparing decimals

Compare tenths place (first digit after decimal point)

Which is greater: 0.760.76 or 0.7590.759?

0.760.76 (hundredths: 6>56 > 5)

Direction digits move when multiplying by powers of 1010

Left

Places digits move when multiplying by 1010

11 place left

Places digits move when multiplying by 100100

22 places left

Direction digits move when dividing by powers of 1010

Right

Places digits move when dividing by 100100

22 places right

41.18×1041.18 \times 10

411.8411.8

4118÷1004118 \div 100

41.1841.18

Place value of 88 in 2.842.84

88 hundredths

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