Starter quiz
- Tick the number facts that make 10.
- 4 + 7
- 2 + 8 ✓
- 4 + 6 ✓
- 6 + 5
-
- Ten hundredths are equal to _________.
- one tenth ✓
- one
- ten tenths
-
Tick all of the equations that can represent this part-part-whole model.- 10 = 7 – 3
- 10 = 7 + 3 ✓
- 7 + 3 = 10 ✓
- 3 + 7 = 10 ✓
- 10 – 3 = 7 ✓
-
- I know 6 + 3 = 9 so 60 + 30 = ______
- '90 ' ✓
- I know 6 + 3 = 9 so 0.6 + 0.3 = ______
- '0.9' ✓
- Tick the correct equations.
- 1.4 – 0.6 = 0.8 ✓
- 14 – 0.6 = 0.8
- 6 + 0.8 = 1.4
- 0.6 + 0.8 = 14
- 0.6 + 0.8 = 1.4 ✓
-
Exit quiz
- I know 4 + 5 = 9 so 0.04 + 0.05 = ______
- '0.09 ' ✓
- I know 7 − 4 = 3 so 0.07 − 0.04 = ______
- '0.03 ' ✓
- Which of these pairs of numbers sum to make 0.1?
- 0.06 + 0.04 ✓
- 0.02 + 0.08 ✓
- 0.5 + 0.5
- 0.09 + 0.1
-
- Use a known number fact to help you solve: 0.1 − 0.04 = ______
- '0.06 ' ✓
Fill in the missing number for the equation represented by the number line.- '0.07 ' ✓
- Fill in the missing number: ______ − 0.08 = 0.09
- '0.17 ' ✓
Worksheet
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Presentation
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Lesson Details
Key learning points
- 10 one hundredths is equal to one tenth or 0.1
- If 7 + 3 is equal to 10 then 7 hundredths + 3 hundredths is equal to 10 hundredths which is equal to one tenth 0.1
- Number facts and place value can be applied when adding hundredths which bridge one tenth.
Common misconception
Pupils use a known fact but add or subtract with different place values (e.g. 0.6 + 0.04 = 0.1).
Unitise through the use of language to help identify this for pupils. For example: 6 hundredths plus 4 hundredths is equal to 10 hundredths.
Keywords
Number fact - A simple calculation using two numbers.
Bridge / bridging - A mental strategy which uses addition or subtraction to cross a number boundary.
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