Question

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a) 25 . 2² - (15 - 18) + (12 - 19 + 10)

b) 75 - (3 . 5² - 4 . 2³)

Answer 1

a) 25. 2² - (15 - 18) + (12 - 19 + 10)

= 25.4 - (-3) + 3

= 100 + 3 + 3

= 106

b) 75 - (3.5² - 4.2³)

= 75 - (3.25 - 4.8)

= 75 - (75 - 32)

= 75 - 43

= 32

Answer 2

a) 25.2²- (15-18) + (12-19+10)

= 25.4 -(-3)+3

=100-3+3

= 97+3= 100

b)75-(3.5²- 4. 2³)

=75-(3.25-4.8)

=75-(75-32)

=75-43=32

Answer 3

a) 25.22- (15-18) + (12-19+10)

= 25.4 -(-3)+3

=100-3+3

= 97+3= 100

Answer 4

a) 25.22- (15-18) + (12-19+10)

= 25.4 -(-3)+3

=100-3+3

= 97+3= 100

b)75-(3.52- 4. 23)

=75-(3.25-4.8)

=75-(75-32)

=75-43=32