Multiplying decimals
The Maths Habit
Multiplying always makes a number bigger.
Do you agree?
No: 8 × 1 = 8, 8 × 0 = 0 and 8 × ½ = 4
- Decimal place
- A digit’s position after the decimal point.
- Product
- The answer when numbers are multiplied.
A 1 by 1 square cut into 100 small squares.
One small square is 0.01 of the whole
A rectangle 0.3 by 0.2 inside the square.
3 × 2 = 6 small squares, so 0.3 × 0.2 = 0.06
Work out 0.8 × 0.06
=8 ÷ 10 × 6 ÷ 100=48 ÷ 1000=0.048
Work out 0.4 × 0.09
=4 ÷ 10 × 9 ÷ 100=36 ÷ 1000=0.036
Work out 0.8 × 0.06
=8 ÷ 10 × 6 ÷ 100=48 ÷ 1000=0.048
Work out 0.9 × 0.03
=9 ÷ 10 × 3 ÷ 100=27 ÷ 1000=0.027
Work out 0.8 × 0.06
=8 ÷ 10 × 6 ÷ 100=48 ÷ 1000=0.048
Work out 1.4 × 0.6
=14 ÷ 10 × 6 ÷ 10=84 ÷ 100=0.84
Work out 0.8 × 0.06
=8 ÷ 10 × 6 ÷ 100=48 ÷ 1000=0.048
Work out 0.05 × 0.3
=5 ÷ 100 × 3 ÷ 10=15 ÷ 1000=0.015
Work out 0.8 × 0.06
=8 ÷ 10 × 6 ÷ 100=48 ÷ 1000=0.048
Work out 2.5 × 0.03
=25 ÷ 10 × 3 ÷ 100=75 ÷ 1000=0.075
Ribbon costs £0.40 for each metre. How much does 0.6 m cost?
£0.24Find two decimals that multiply to make 0.12.
0.3 × 0.4, for example
