# Estimation

Here is a list of all of the skills that cover estimation! These skills are organized by grade, and you can move your mouse over any skill name to view a sample question. To start practicing, just click on any link. IXL will track your score, and the questions will automatically increase in difficulty as you improve!

## Second-grade skills

- N.1Estimate to the nearest ten
- N.2Round to the nearest ten
- N.3Round to the nearest ten or hundred
- N.4Round to the nearest ten, hundred, or thousand
- N.5Estimate sums
- S.3Which customary unit of length is appropriate?
- S.5Which customary unit of weight is appropriate?
- S.6Which customary unit of volume is appropriate?
- S.9Which metric unit of length is appropriate?
- S.11Which metric unit of weight is appropriate?
- S.12Which metric unit of volume is appropriate?

## Third-grade skills

- M.1Rounding - nearest ten or hundred only
- M.2Rounding
- M.3Rounding money amounts
- M.4Rounding puzzles
- M.5Solve inequalities using estimation
- M.6Estimate sums - up to 1,000 only
- M.7Estimate sums
- M.8Estimate products
- M.9Estimate quotients
- R.2Reasonable temperature
- R.4Which customary unit is appropriate?
- R.10Which metric unit is appropriate?

## Fourth-grade skills

- A.6Rounding
- B.8Estimate sums
- B.9Estimate sums: word problems
- C.6Estimate differences
- C.7Estimate differences: word problems
- D.12Estimate products - multiply by 1-digit numbers
- D.13Estimate products - multiply by larger numbers
- D.14Estimate products: word problems
- E.25Estimate quotients
- F.3Estimate sums, differences, products, and quotients: word problems
- M.3Round money amounts
- N.2Which customary unit is appropriate?
- N.8Which metric unit is appropriate?
- P.16Estimate angle measurements
- U.12Round decimals
- V.9Estimate sums and differences of decimals

## Fifth-grade skills

- A.6Rounding
- C.7Round decimals
- D.10Estimate sums and differences of whole numbers
- D.11Estimate sums and differences: word problems
- E.8Estimate sums and differences of decimals
- F.8Estimate products
- F.9Estimate products: word problems
- G.1Estimate products of decimals
- H.6Estimate quotients: word problems
- H.15Estimate quotients
- L.13Round mixed numbers
- M.17Estimate sums and differences of mixed numbers
- N.22Estimate products of mixed numbers
- W.1Choose the appropriate customary unit of measure
- W.7Choose the appropriate metric unit of measure
- W.18Reasonable temperature - Celsius and Fahrenheit

## Sixth-grade skills

- B.7Round decimals
- B.8Round whole numbers and decimals: find the missing digit
- E.10Estimate square roots
- J.3Estimate sums and differences of decimals
- K.8Estimate products
- L.4Estimate quotients
- M.1Estimate to solve word problems
- O.2Estimate products of decimal numbers
- U.8Estimate sums and differences of mixed numbers
- V.4Estimate products of fractions and whole numbers
- V.9Estimate products of fractions, whole numbers, and mixed numbers
- W.6Estimate quotients when dividing mixed numbers
- Y.1Estimate customary measurements
- Y.2Estimate metric measurements
- Z.4Estimate angle measurements

## Seventh-grade skills

- B.4Round decimals
- C.7Estimate sums, differences, and products of decimals
- F.9Round mixed numbers
- G.6Estimate sums and differences of mixed numbers
- G.15Estimate products and quotients of fractions and mixed numbers
- I.10Estimate square roots
- J.10Estimate population size using proportions
- K.4Estimate percents of numbers
- L.10Estimate tips
- M.1Estimate to solve word problems
- N.1Estimate customary measurements
- N.2Estimate metric measurements