Math Drills

Rounding Numbers Review

D-5

Word Problems

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What this worksheet covers

Grade: Grade 4 (Elementary School)
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.

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 Grace's family's store, 2834 customers came in the morning and 4572 came in the afternoon. About how many customers came in all in 1 day? Round each number to the hundreds place, then add the rounded numbers to find the answer. Answer □
Answer: 7400people
(2)According to a map Hannah looked at, the population of City A is 8356 people and the population of City B is 2714 people. About how many more people does City A have than City B? Round to the hundreds place to find the rounded number. Answer □
Answer: 5700people
(3)At a nearby shop, 94 cookies are sold in 1 day. About how many will be sold in 63 days? Round each number to 1 digit from the left, then use the rounded numbers to find the answer. Answer □
Answer: 5400cookies
(4)Liam collected 3784 stickers. If they are shared equally among 22 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: 200stickers

What to do next

RoundingRounding Calculation (Tens or Hundreds Place)

Next unit: Rules of Calculation

Other versions of this worksheet

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