Question

Is each expression equivalent to 6 * 53? Justify your reasoning.

a. 6 * 50 + 6* 3
b. 10 * 53 -4 53
c. 6 50 + 3
d. 6 * (50 + 3)

Answer 1

A, B, D = Yes

C = No

6 * 50 + 6* 3 = 6* ( 50 + 3) = 6* 53

10 * 53 -4*53 = (10 - 4)*53 = 6*53

6 * 50 + 3 = 303

6 * (50 + 3) = 6*53

Answer 2

• a, b, d. Yes
• c. No

Explanation:

a. 6 * 50 + 6* 3 = 6* ( 50 + 3) = 6* 53

• Yes

b. 10 * 53 -4*53 = (10 - 4)*53 = 6*53

• Yes

c. 6 * 50 + 3 = 303

• No

d. 6 * (50 + 3) = 6*53

• Yes