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

## Third-grade skills

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

## Fourth-grade skills

- A.16 Rounding
- B.8 Estimate sums
- B.9 Estimate sums: word problems
- C.6 Estimate differences
- C.7 Estimate differences: word problems
- D.13 Estimate products - multiply by 1-digit numbers
- D.14 Estimate products - multiply by larger numbers
- D.15 Estimate products: word problems
- E.26 Estimate quotients
- F.3 Estimate sums, differences, products, and quotients: word problems
- M.3 Round money amounts
- N.2 Which customary unit is appropriate?
- N.11 Which metric unit is appropriate?
- T.13 Round decimals
- U.9 Estimate sums and differences of decimals
- Z.4 Estimate angle measurements

## Fifth-grade skills

- A.7 Rounding
- B.8 Estimate sums and differences of whole numbers
- B.9 Estimate sums and differences: word problems
- C.8 Estimate products
- C.9 Estimate products: word problems
- D.9 Estimate quotients
- D.10 Estimate quotients: word problems
- G.7 Round decimals
- H.8 Estimate sums and differences of decimals
- I.1 Estimate products of decimals
- K.14 Round mixed numbers
- L.17 Estimate sums and differences of mixed numbers
- M.22 Estimate products of mixed numbers
- Z.1 Choose the appropriate customary unit of measure
- Z.7 Choose the appropriate metric unit of measure
- Z.20 Reasonable temperature - Celsius and Fahrenheit

## Sixth-grade skills

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

## Seventh-grade skills

- D.4 Round decimals
- E.7 Estimate sums, differences, and products of decimals
- F.10 Round mixed numbers
- G.6 Estimate sums and differences of mixed numbers
- G.15 Estimate products and quotients of fractions and mixed numbers
- I.10 Estimate square roots
- J.12 Estimate population size using proportions
- L.4 Estimate percents of numbers
- M.10 Estimate tips
- N.1 Estimate to solve word problems
- O.1 Estimate customary measurements
- O.2 Estimate metric measurements