# Estimating Differences SOL 2.8 Grade 2 Created by; Kim Smith.

## Presentation on theme: "Estimating Differences SOL 2.8 Grade 2 Created by; Kim Smith."— Presentation transcript:

Estimating Differences SOL 2.8 Grade 2 Created by; Kim Smith

Estimations are_______. A.Exact answers B.As close as possible to exact C.Guessing D.Adding numbers for answers 25 1234567891011121314151617181920 21222324252627

Why do we estimate? A.To have an exact answer. B.To save time when an exact answer is not needed. C.To use as much tine as we need. D.None of the above. 25 1234567891011121314151617181920 21222324252627

When we estimate differences do we subtract whole numbers? A.Yes B.No C.I do not know D.I can’t tell you 25 1234567891011121314151617181920 21222324252627

When estimating we combine numbers in many ways? A.No B.Yes C.Who knows D.I don’t know 25 1234567891011121314151617181920 21222324252627

When estimating do we usually depend on place value? A.Never B.Only when I have to. C.Yes D.I have no idea what you mean. 25 1234567891011121314151617181920 21222324252627

If you have 10- ones what could you exchange them for? A.5 ones B.10 ones C.1 ten D.10 tens 25 1234567891011121314151617181920 21222324252627

In estimation if you have 28 ones what could you exchange them for? A.28 tens B.3 tens C.2 tens D.1 ten 25 1234567891011121314151617181920 21222324252627

If you need to estimate the difference of 19 - 11 what would you choose? 25 1234567891011121314151617181920 21222324252627 A.1 ten - 2 tens B.2 tens - 2 tens C.2 tens - 1 ten D.1 ten - 1 ten

If estimating the answer 87 - 66= you would use what? 25 1234567891011121314151617181920 21222324252627 A.8 tens - 6 tens B.8 tens - 6 ones C.9 tens - 6 tens D.9 tens -7 tens

Similar presentations