Identify knowns and unknowns in addition equations | Maths

Starter quiz

Which number in this equation is the sum? 100 = 20 + 80
- 100 ✓
- 80
- 20
Which of these are parts in an equation?
- sum
- addend ✓
- difference ✓
- minuend
What is the missing sum in this bar model?
- '180' ✓
What is the value of the missing part in this bar model?
- '120' ✓
What could the missing addends in this bar model be?
- 70 and 70 ✓
- 80 and 40
- 90 and 50 ✓
- 110 and 40
Which equations could be represented by the bar model?
- 260 + 40 = 300
- 260 − 110 = 150 ✓
- 130 + 130 = 260 ✓
- 260 = 360 − 100