Angles that add up
Grade 4 · Level 3 · Sheet 1the answers
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- 1.Answer:
How many degrees is the other part?
- 2.Answer:
How many degrees is the other part?
- 3.Answer:
How many degrees is the other part?
- 4.Answer:
How many degrees is the other part?
- 5.Answer:
How many degrees is the other part?
- 6.Answer:
How many degrees is the other part?
- 7.Answer:
How many degrees is the other part?
- 8.Answer:
How many degrees is the other part?
- 9.Answer:
How many degrees is the other part?
- 10.Answer:
How many degrees is the other part?
- 11.Answer:
How many degrees is the other part?
- 12.Answer:
How many degrees is the other part?
Show the answer key
- 1.35
- 2.40
- 3.125
- 4.50
- 5.70
- 6.30
- 7.25
- 8.20
- 9.75
- 10.40
- 11.95
- 12.50
Answer key · Angles that add up · Level 3 · Sheet 1
- 1.35
- 2.40
- 3.125
- 4.50
- 5.70
- 6.30
- 7.25
- 8.20
- 9.75
- 10.40
- 11.95
- 12.50
The mistakes behind most wrong answers
A wrong answer in angles that add up is rarely random. These are the ones that come up most often, each on a real problem — worth knowing before you mark a sheet, because the fix for each is different.
How many degrees is the other part?
The answer is 50. A child who answers 120 probably answered with one of the numbers shown.
How many degrees is the other part?
The answer is 75. A child who answers 85 probably counted one group too many or too few.
How many degrees is the other part?
The answer is 115. A child who answers 235 probably added instead of taking away.
How many degrees is the whole angle?
The answer is 115. A child who answers 45 probably took away instead of adding.
In the app, every wrong answer is matched against mistakes like these, and the weekly email tells you which one your child keeps making — in those words, not as a percentage.