New
New
Year 5

# Solve measures problems using knowledge of multiplying decimal fractions

I can use knowledge of multiplying decimal fractions by whole numbers to solve measures problems.

New
New
Year 5

# Solve measures problems using knowledge of multiplying decimal fractions

I can use knowledge of multiplying decimal fractions by whole numbers to solve measures problems.

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## Lesson details

### Key learning points

1. Using knowledge of multiplying decimal numbers with whole numbers can help us solve measures problems.
2. __ times __ ones is equal to __ ones, so __ times __ tenths/hundredths is equal to __ tenths/hundredths.’ supports us.
3. Unitising of known facts can be used to support calculating with decimal fractions.
4. When we multiply by ten, the digits move one place value place to the left.

### Common misconception

Children may get confused when converting between units of measure and be unsure when they need to multiply or divide.

___ are smaller than ___, so there must be more of them in the same measure so we need to multiply (and vice versa).

### Keywords

• Convert - When we convert, we change a value or expression from one form to another.

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Starter quiz

### 6 Questions

Q1.
Match the equivalent units of measure.

1 m

10 mm

1,000 m

1,000 ml

1,000 g

Q2.
Match the equation to the missing factor.
Correct Answer:3 × ___ = 18,6

6

Correct Answer:4 × ___ = 20,5

5

Correct Answer:___ × 5 = 40,8

8

Correct Answer:___ × 2 = 14,7

7

Correct Answer:7 × __ = 63,9

9

Q3.
If 6 × 9 = 54, what does 6 × 0.9 equal?
540
54
0.54
0.054
Q4.
Which of the following are multiples of eight?
26
280
Q5.
Match the equation to its answer.

3.6

2.4

1.6

0

0.9

Q6.
An Oak tree is 0.04 km tall. A pine tree is twice this height. How tall is the pine tree? km

## Exit quiz

### 6 Questions

Q1.
If 1 cm = 10 mm and 0.1 cm = 1 mm. Convert 0.6 cm to mm. 0.6 cm = mm
Q2.
Match the equation to the correct answer
Correct Answer:£0.50 × 9 =,450 p

450 p

Correct Answer:£0.20 × 8 =,160 p

160 p

Correct Answer:£0.60 × 8 =,480 p

480 p

Correct Answer:£0.10 × 9 =,90 p

90 p

Correct Answer:£0.80 × 9 =,720 p

720 p

Correct Answer:£0.80 × 10 =,800 p

800 p

Q3.
Sofia made a tower out of blocks that are 0.6 cm tall. What could the height of the tower be?