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
- Using knowledge of multiplying decimal numbers with whole numbers can help us solve measures problems.
- __ times __ ones is equal to __ ones, so __ times __ tenths/hundredths is equal to __ tenths/hundredths.’ supports us.
- Unitising of known facts can be used to support calculating with decimal fractions.
- When we multiply by ten, the digits move one place value place to the left.
Keywords
Convert - When we convert, we change a value or expression from one form to another.
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).
Ensure that children are fluent with their times-tables or have access to scaffolds to avoid overload. Make this practical where possible to support children with their unitising. Also ensure children are secure with knowing that their number conversion facts e.g. 1 cm = 10 mm, 1 km = 1,000 m etc
Teacher tip
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).Lesson video
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Starter quiz
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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.
6
5
8
7
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
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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
450 p
160 p
480 p
90 p
720 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?
0.3 cm
1.4 cm
Q4.
If Sofia builds the tower out of three blocks that are each 0.6 cm tall. How tall is the tower in mm? mm
Q5.
Lucas saves £0.40 a week. How much does he save in six weeks? Give your answer in pence. p
Q6.
Lucas has £0.20 Sofia has six times as much. How much more money does Sofia have than Lucas? Give your answer in pence. pence