Question

8. Use distributive law and evaluate :
(i) 576 x 285 + 576 x 115
(ii) 385 x 178 - 385 x 78
(iii) 365 x 645 + 135 x 645
(iv) 407 x 168 - 307 x 168​

Answer 1

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(i)

• 576×285+576×115
• 576(285+115)
• 576×400
• 230400

(ii)

• 385×178-385×78
• 385(178-78)
• 385×100
• 38500

(iii)

• 365×645+135×645
• 645(365+135)
• 645×500
• 322500

(iv)

• 407 x 168 - 307 x 168
• 168(407-307)
• 168×100
• 16800