Math Drills
Rounding Numbers Review
D-2Word Problems
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What this worksheet covers
- Topic
- Rounding Numbers
Rounding to reach an approximate figure is practiced across shifting places: To the Tens Place, To the Hundreds Place, To the Thousands Place and To 2 Significant Digits. From there the work moves to estimating sums, differences, products and quotients from rounded numbers, and applies the same idea in word problems.
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The most frequent error is rounding off the hundreds digit itself when told to round to the hundreds place, a mix-up over which place to act on. One zero too many or too few at the end of the answer reveals it. With 2 significant digits, numbers containing a 0 throw off where the counting starts, and the rounding lands one place early.
Before parentheses arrive as something new in Rules of Calculation, the skill of treating a number as approximate gets finished off here. The quotient-guessing built up in Division by 2-Digit Numbers is reorganized into formal rounding rules for estimating the answer to any of the four operations. That rounding skill is called on again in grade 5, when Division of Decimals asks for an answer given as an approximate figure.
- Addition and Subtraction · Addition (Word Problems)1 question
- Addition and Subtraction · Subtraction (Word Problems)1 question
- Multiplication and Division · Multiplication (Word Problems)1 question
- Multiplication and Division · Division (Word Problems)1 question
Questions & answers
Problems and answers on this worksheet
These are the problems in “Rounding Numbers”, shown with their answers.
(1)At school, class 1 has 1568 origami sheets and class 2 has 2374 sheets. About how many sheets will there be in all? Round each number to the hundreds place, then add the rounded numbers to find the answer. Answer □
Answer: 4000sheets
(2)There are 7234 notebooks in the warehouse, and 1890 of them were used. About how many are left? Round to the thousands place to find the rounded number. Answer □
Answer: 5000notebooks
(3)At the greengrocer in Olivia's town, 716 oranges are sold in 1 day. About how many will be sold in 43 days? Round each number to 1 digit from the left, then use the rounded numbers to find the answer. Answer □
Answer: 28000oranges
(4)There are 2734 bananas. If they are shared equally among 34 people, about how many will each 1 person get? Round to 1 digit from the left to get the rounded number, then find the answer. Answer □
Answer: 100bananas
What to do next
More worksheets in this unit
RoundingRounding Calculation (Thousands or Top 2 Digits)
Addition and SubtractionAddition and Subtraction Calculation (Thousands or Ten-Thousands)
Addition and SubtractionAddition and Subtraction Calculation (Hundreds or Top 1 Digit)
Addition and SubtractionAddition and Subtraction Word Problems
Multiplication and DivisionMultiplication and Division Calculation (Multiplication)
Multiplication and DivisionMultiplication and Division Calculation (Division)
Multiplication and DivisionMultiplication and Division Word Problems
Rounding Numbers ReviewRounding Numbers Review Calculation (Rounding)
Rounding Numbers ReviewRounding Numbers Review Calculation (Addition and Subtraction)
Rounding Numbers ReviewRounding Numbers Review Calculation (×, ÷, and More)
