Page 3 - E book 5

Delta Modern Language Schools

Primary stage Grade 5

Math department

1st term 2024/2025

Unit (1)
Decimal place value and computation

Place hundreds Tens ones Decimal Tenths hundredths Thousandths

value point

427.841 4 27 . 8 4 1

Value 400 20 7 0.8 0.04 0.001

or or or

We can write any number by different forms
Standard form: 8.765
Word form: eight and seven hundred sixty five thousandths
Unit form: 8 ones, 7 tenths, 6 hundredths, 5 thousandths.
Expanded form: 8 + 0.7 + 0.06 + 0.005
Decomposing decimals by different ways
1st way: 42.81 = 40 + 2 + 0.8 + 0.01
2nd way: 42.81 = 42 + 0.8 + 0.01
3rd way: 42.81 = 42 + 0.81

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