Question

Exercise 1.4
1. Estimate the value of the following to the nearest ten.
(1) 67 + 99
(ii) 364 - 273 (iii) 1794 - 1237
(V) 232 x 657 (vi) 176 x 199 (vii) 252 + 749
(ix) 28 = 14 (x) 89 - 28
(xi) 637 + 78
(xiii) 993 – 29 (xiv) 1298 - 723 (xv) 2798 + 43​

Answer 1

Answer:

70+100=170

360-270=90

1800-1240=560

230×660=151800

180×200=36000

250+750=1000

28=14=2

90-30=60

640+80=720

990-30=960

1300-729=571

2800+40=2840

Answer 2

Answer:

Step-by-step explanation:

 1+

67+99=166 (6_5)

 =170