# 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

- P.1Rounding - nearest ten or hundred only
- P.2Rounding
- P.3Rounding money amounts
- P.4Rounding puzzles
- P.5Estimate sums up to 1,000
- P.6Estimate sums
- P.7Estimate differences up to 1,000
- P.8Estimate differences
- P.9Solve inequalities using estimation
- P.10Estimate products
- P.11Estimate quotients
- BB.2Reasonable temperature
- BB.4Which customary unit of length is appropriate?
- BB.5Which customary unit of weight is appropriate?
- BB.6Which customary unit of volume is appropriate?
- BB.7Which customary unit is appropriate?
- BB.13Which metric unit of length is appropriate?
- BB.14Which metric unit of weight is appropriate?
- BB.15Which metric unit of volume is appropriate?
- BB.16Which 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.26Estimate quotients
- F.3Estimate sums, differences, products, and quotients: word problems
- M.3Round money amounts
- N.2Which customary unit is appropriate?
- N.11Which metric unit is appropriate?
- T.12Round decimals
- U.9Estimate sums and differences of decimals
- Z.4Estimate angle measurements

## Fifth-grade skills

- A.6Rounding
- B.10Estimate sums and differences of whole numbers
- B.11Estimate sums and differences: word problems
- C.8Estimate products
- C.9Estimate products: word problems
- D.9Estimate quotients
- D.10Estimate quotients: word problems
- G.7Round decimals
- H.8Estimate sums and differences of decimals
- I.1Estimate products of decimals
- K.13Round mixed numbers
- L.17Estimate sums and differences of mixed numbers
- M.22Estimate products of mixed numbers
- Z.1Choose the appropriate customary unit of measure
- Z.7Choose the appropriate metric unit of measure
- Z.20Reasonable temperature - Celsius and Fahrenheit

## Sixth-grade skills

- B.8Estimate products
- C.4Estimate quotients
- D.11Estimate square roots
- F.7Round decimals
- F.8Round whole numbers and decimals: find the missing digit
- G.3Estimate sums and differences of decimals
- H.1Estimate products of decimal numbers
- J.8Estimate sums and differences of mixed numbers
- K.4Estimate products of fractions and whole numbers
- K.9Estimate products of fractions, whole numbers, and mixed numbers
- L.6Estimate quotients when dividing mixed numbers
- Q.1Estimate to solve word problems
- T.1Estimate customary measurements
- T.2Estimate metric measurements
- CC.3Estimate angle measurements

## Seventh-grade skills

- D.4Round decimals
- E.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.11Estimate population size using proportions
- L.4Estimate percents of numbers
- M.10Estimate tips
- N.1Estimate to solve word problems
- O.1Estimate customary measurements
- O.2Estimate metric measurements