Question

Q4. Solve the following using suitable properties
(i) 450 × (-50) + (-450) x 25
(ii) 21 × (-41) + 11 × (-21)
(iii) (-19) * (-49)
(iv) (-47) (-29) + 47
(v) (-51) 103
(vi) 9 x (60 - 2)
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Answer 1

Answer:

Q4. Solve the following using suitable properties

(i) 450 × (-50) + (-450) x 25

(ii) 21 × (-41) + 11 × (-21)

(iii) (-19) * (-49)

(iv) (-47) (-29) + 47

(v) (-51) 103

(vi) 9 x (60 - 2)

Answer 2

1) (450)(−50)+(−450)(25)

=−33750

2) (21)(−41)+(11)(−21)

=−1092

3) (−19)(−49)

=931

4)(−47)(−29)+47

=1410

5) (−51)(103)

=−5253

6) 9(60−2)

=522

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