Question

What is a reasonable estimate for the subtraction equation 2.9 – 1.2 = ________ when you round each number to the nearest whole number?

Answer 1

2

Explanation:

You would round 2.9 up to 3, and then round 1.2 down to 1.

3 - 1 = 2

Answer 2

2

Explanation:

I took 2.9 rounded it to 3

then 1.2 rounded to 1

and 3-1=2