Identify which of the following expressions are equal to the given expression without computation. Class 7

Identify which of the following expressions are equal to the given expression without computation. Class 7

Question 1.

Identify which of the following expressions are equal to the given expression without computation. You may rewrite the expressions using terms or removing brackets. There can be more than one expression which is equal to the given expression. Class 7

(a) 83 - 37 - 12

(i) 84 - 38 - 12

(ii) 84 - (37 + 12)

(iii) 83 - 38 - 13

(iv) -37 + 83 - 12

(b) 93 + 37 × 44 + 76

(i) 37 + 93 × 44 + 76

(ii) 93 + 37 × 76 + 44

(iii) (93 + 37) × (44 + 76)

(iv) 37 × 44 + 93 + 76

Solution:

Do as directed.

For (a) 83 - 37 - 12, the equal expressions are : (i) 84 - 38 - 12 and (iv) -37 + 83 -12.

For (b) 93 + 37 × 44 + 76, the equal expressions is only (iv) 37 × 44 + 93 + 76.

Question 2.

Choose a number and create ten different expressions having that value. Class 7

Solution:

Do as directed.

Question 3.

What other similar interesting questions can you ask? Class 7

Solution:

Do as directed.