Question

By writing
each number correct in one significant figure . Estimate the value 21.86 -9.64/2.47

Answer 1

Answer:

1

Step-by-step explanation:

2-1=1

Y bcz,

First take 21.86, here there are 2 digits before the point so significant figure is 2.

Nxt in 9.64,2.47 the significant figures are 1 and 1.

now, 2-1/1=1

answer =1

Answer 2

Answer:

15

Step-by-step explanation:

21.86 = 20

9.64= 10

2.47=2

using bodmas

20-10/2

20-5

15