Page 5 - E book 5

Delta Modern Language Schools

Primary stage Grade 5

Math department

1st term 2024/2025

Comparing Decimal

Compare 3.53 and 3.52

Ones . Decimals
Hundredths Thousandths
H T O . Tenths
3
3. 5 2
3. 5

Begin with the digit in the greatest place value

• Compare ones : 2 ones = 2 ones
• Compare tenths : 5 tenths = 5 tenths
• Compare hundredths : 3 hundredths > 2 hundredths

So 3.53 >3.52

Rounding decimals

➢ 1) Front - end Estimation strategy: The value of first digit of

the number from the left (The highest place value)

EX: 14.98 ≈ 10

➢ 2) Bench mark decimals strategy: -

The bench mark numbers are 0, ½, 1

EX: 0.1, 0.01, 0.001 is closer to 0
0.9, 0.99, 0.8 is closer to 1
0.52, 0.641, 0.39 is closer to 0.5

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