Add two 3-digit numbers using adjusting strategies | Maths

Starter quiz

Which of these numbers is closest to 10?
- 12
- 13
- 9 ✓
- 6
- 15
Which of these numbers is closest to a tens boundary?
- 54
- 48
- 53
- 46
- 51 ✓
Which of these numbers is closest to 100?
- 89
- 110
- 98 ✓
- 107
- 103
Which number is closest to a hundreds boundary?
- 514
- 505
- 491
- 501 ✓
- 502
Which of these number lines accurately represents 22 + 12 = 34 using partitioning to bridge?
Match the complements to 100
- 92
  
  ⇔
  
  8 ✓
- 95
  
  ⇔
  
  5 ✓
- 89
  
  ⇔
  
  11 ✓
- 98
  
  ⇔
  
  2 ✓
- 75
  
  ⇔
  
  25 ✓
- 60
  
  ⇔
  
  40 ✓