3. Choose the correct option 8 x (6 x 7) is equal to:
a. 8 x 6 - 7
b. 8- (6 - 7)
e. 8 x 12
d. (8 x 6) x 7
ii. Which one of the following illustrates the Associative Law of addition?
a. 3+ (2 + 4) = (4 + 4) + 1
b. 3+ (2 + 4) = (3 + 2) + 4
c. 3+ (2 + 4) = (5 + 2) + 2
d. 3+ (2 + 4) = (2+6) + 1
iii. Which of the following illustrates the Associative Law of multiplication?
a. 4x (3 x 6) = (6 x 6 x 2
b. 4x (3 x 6) = (3 x 12) x 2
c. 4x (3 x 6) = (4 x 3) x 6
d. 4x (3 x 6) = (3x8) 3
4. Do this without using distributive property.
i) 39 x 63 + 39 x 37
ii) 81 x 450 +81 x 550
iii) 50 x 161 - 50 x 81
iv) 827 x 60 - 327 x 60
(class 9)
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