Let’s solve each problem step by step.
We are told these are
complementary angles. That means the two angles add up to
90 degrees.
In every diagram, one angle is given (like 30°, 32°, etc.), and we’re asked to find angle “A”. Since they’re complementary:
>
Angle A + Given Angle = 90°
So to find Angle A, we do:
>
Angle A = 90° – Given Angle
Now let’s calculate for each one:
---
1) 90 – 30 =
60
2) 90 – 32 =
58
3) 90 – 42 =
48
4) 90 – 56 =
34
5) 90 – 27 =
63
6) 90 – 55 =
35
7) 90 – 33 =
57
8) 90 – 31 =
59
9) 90 – 51 =
39
10) 90 – 67 =
23
11) 90 – 63 =
27
12) 90 – 70 =
20
---
Let me double-check a few to be sure:
- #1: 30 + 60 = 90 → ✔️
- #5: 27 + 63 = 90 → ✔️
- #10: 67 + 23 = 90 → ✔️
- #12: 70 + 20 = 90 → ✔️
All look correct.
Final Answer:
1. 60
2. 58
3. 48
4. 34
5. 63
6. 35
7. 57
8. 59
9. 39
10. 23
11. 27
12. 20
Parent Tip: Review the logic above to help your child master the concept of 4th grade angles worksheet.
