New
New
Multiply hundredths by whole numbers
I can use known multiplication facts and unitising to multiply hundredths by whole numbers.
Lesson 7 of 15
New
New
- Year 5
Multiply hundredths by whole numbers
I can use known multiplication facts and unitising to multiply hundredths by whole numbers.
Lesson details
Key learning points
- There are one hundred hundredths in one whole.
- There are ten hundredths in one tenth.
- Unitising can help to multiply hundredths by whole numbers.
- The sentence: ___ times ___ ones is equal to ___ ones so ___ times ___ hundredths is equal to ___ hundredths supports us
Keywords
Hundredth - One hundredth is one part in one hundred equal parts.
Common misconception
Children may get confused with the vocabulary when we say, for example, zero point one two rather than zero point twelve. They may also confuse how we write, for example, 32 hundredths.
We say zero point one two to show that there is one tenth and two hundredths. 32 hundredths is composed of 30 hundredths - this is the same as 3 tenths and we have 2 more hundredths so 32 hundredths is written 0.32
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 there are ten hundredths in one tenth.
Teacher tip
Equipment
Licence
This content is © Oak National Academy Limited (2025), 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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Prior knowledge starter quiz
6 Questions
Q1.Match the factors to their product.
Match the factors to their product.
Q2.Match the equation to the missing factor.
Match the equation to the missing factor.
Q3.what comes next in this sequence? 0.2, 0.3, 0.4,
what comes next in this sequence? 0.2, 0.3, 0.4,
Q4.Which digit is in the hundredths place with the number 342.561?
Which digit is in the hundredths place with the number 342.561?
Q5.If 7 × 6 = 42, what does 7 × 0.6 equal?
If 7 × 6 = 42, what does 7 × 0.6 equal?
420
42
0.42
0.042
Q6.Lucas is making a line of beads. Each bead is 0.9 cm long. How long could it be?
Lucas is making a line of beads. Each bead is 0.9 cm long. How long could it be?
2.4 cm
8 cm
Assessment exit quiz
6 Questions
Q1.How many hundredths is 0.07 composed of? hundredths.
How many hundredths is 0.07 composed of? hundredths.
Q2.What comes next in this sequence? 0.08, 0.09, 0.1, ?
What comes next in this sequence? 0.08, 0.09, 0.1, ?
Q3.If 9 × 3 = 27, what does 9 × 0.03 equal?
If 9 × 3 = 27, what does 9 × 0.03 equal?
270
27
2.7
0.027
Q4.Match the expression to its answer.
Match the expression to its answer.
Q5.It takes 0.02 kg of sugar to make one cake. How much sugar is needed to make nine cakes? kg
It takes 0.02 kg of sugar to make one cake. How much sugar is needed to make nine cakes? kg
Q6.A red kite is flying 0.06 km above the ground. An eagle is flying at twice this height. How far above the ground is the eagle? km
A red kite is flying 0.06 km above the ground. An eagle is flying at twice this height. How far above the ground is the eagle? km
