Now find the values of the other arithmetic expressions. 1. 23 – 10 × 2; 2. 83 + 28 – 13 + 32. Class 7

Now find the values of the other arithmetic expressions. 1. 23 – 10 × 2; 2. 83 + 28 – 13 + 32 Class 7

Question 1.

Now find the values of the other arithmetic expressions. Class 7

1. 23 – 10 × 2

2. 83 + 28 – 13 + 32

3. 34 – 14 + 20

4. 42 + 15 – (8 – 7)

5. 68 - (18 + 13)

6. 7 × 4 + 9 × 6

7. 20 + 8 × (16 – 6)

Solution:

1. 23 – 10 × 2 = 23 + –10 × 2 = 23 + –20 = 3

2. 83 + 28 – 13 + 32 =

3. 34 - 14 + 20 = 20 + 20 = 40

4. 42+ 15 - (8 - 7) = 57 + 1 = 58

5. 68 - (18 + 13) =

6. 7 × 4 + 9 × 6 = 28 + 54 = 82

7. 20 + 8 × (16 - 6) = 20 + 8 × 10 = 20 + 80= 100