4. Evaluate using properties :
(i) 548 x 98
(ii) 924 x 988
(ii) 3023 x 723
5. Evaluate using properties :
(i) 679 x 8 + 679 x 2
(ii) 284 x 12 - 284 x 2
(iii) 55873 x 94 + 55873 x 6
(iv) 7984 x 15 - 7984 x 5
(v) 8324 x 1945 - 8324 x 945
(vi) 3333 x 987 + 13 x 3333
roduct of the
please help as fast as u can
Answers
Step-by-step explanation:
(i) 548 x 98 = (500 + 40 + 8) x 98 = 500 x 98 + 40 x 98 + 8 x 98 = 49000 + 3920 + 784 = 53704
(ii) 924 x 988 = (900 + 20 + 4) x 988 = 900 x 988 + 20 x 988 + 4 x 988 = 889200 + 19760 + 3952 = 912912
(iii) 3023 x 723 = (3000 + 20 + 3) x 723 = 3000 x 723 + 20 x 723 + 3 x 723 = 2169000 + 14460 + 2169 = 2185629
5. (i) 679 x 8 + 679 x 2
= 679 x (8 + 2) (using distributivity)
= 679 x 10 = 6790
(ii) 284 x 12 - 284 x 2
= 284 x (12 - 2) (using distributivity)
= 284 x 10 = 2840
(iii) 55873 x 94 + 55873 x 6
= 55873 x (94 + 6) (using distributivity)
= 55873 x 100 = 55873
(iv) 7984 x 15 – 7984 x 5
= 7984 x (15 – 5) (using distributivity)
= 7984 x 10 = 79840
(v) 8324 x 1.945 – 8324 x 945
= 8324 x (1945 – 945) (using distributivity)
= 8324 x 1000 = 8324000
(vi) 3333 x 987 + 13 x 3333
= 3333 x (987 + 13) (using distributivity)
= 3333 x 1000 = 3333000
(please mark me as brainly list)