Add three addends efficiently using a range of strategies | Maths

Starter quiz

6 + 4 + 2 =
- 10
- 12 ✓
- 14
- 16
6 + 6 + 2 =
- '14' ✓
Match the equation to the sum.
- 9 + 1 + 3
  
  ⇔
  
  13 ✓
- 1 + 9 + 2
  
  ⇔
  
  12 ✓
- 9 + 1 + 4
  
  ⇔
  
  14 ✓
- 9 + 5 + 1
  
  ⇔
  
  15 ✓
What is the sum of the numbers in the bar model?
- 13
- 15 ✓
- 17
- 19
What addend is missing from the bar model?
- 6 ✓
- 7
- 8
- 9
The missing numbers from this bar model both have the same value. What are both numbers?
- 5 ✓
- 6
- 7
- 10