Question

Without doing the computation explain why or why not 19.7 is a reasonable value for the expression 122.14 divided by 6.2

Answer 1

Because 19 is almost 20, which goes into 120 six times (think without the zero, 2 into 12, then put the zero back) and the .14 when divided by the 2 is 7

Answer 2

We will use Divisibility rule, which states

→Dividend=Divisor ×Quotient+Remainder

→122.14=Dividend

Divisor=6.2

Given Quotient=19.7

Remainder=0

→19.7×6.2=122.14

`\Rightarrow (122.14)/(6.2)\\\\=(12214)/(620)\\\\=19.7`

So,19.7 is a Reasonable value.