BUILD FLUENCY. EARN YOUR ASCENT.Sign in Year 6
Use inverse operations and the agreed order of operations to find unknown values.
Free examples and worked answers. No account needed.
Practise the method.
Use inverse operations and the agreed order of operations to find unknown values.
Use inverse operations and the agreed order of operations to find unknown values.
Example 1
Find the missing number: (? ×2)+6=20.
Show worked answer
Answer: 7
- Undo the addition: 20−6=14.
- Undo the multiplication: 214=7.
Example 2
Find the missing number: (? ×8)+8=24.
Show worked answer
Answer: 2
- Undo the addition: 24−8=16.
- Undo the multiplication: 816=2.
Example 3
Find the missing value: 9×(7+8)= ?
Show worked answer
Answer: 135
- Calculate the brackets first: 7+8=15.
- Then multiply: 9×15=135.
Put it into practice.
Sign in to choose a set, get feedback and keep your progress.