Mathematics
Grade 5
15 min
Divide numbers ending in zeroes: word problems
Divide numbers ending in zeroes: word problems
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1
Introduction & Learning Objectives
Learning Objectives
Identify division word problems involving numbers ending in zeroes.
Translate word problems into numerical division expressions.
Apply strategies to efficiently divide numbers ending in zeroes.
Solve multi-step word problems involving division of numbers ending in zeroes.
Interpret remainders in the context of real-world word problems.
Check the reasonableness of their answers using estimation.
Ever wondered how a store figures out how many packs of 10 juice boxes they can make from 500 juice boxes? 📦 Let's unlock the secret to dividing big numbers with zeroes!
In this lesson, you'll learn how to tackle word problems that involve dividing numbers ending in zeroes. We'll explore clever tricks to make these divisions easier and understand h...
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Key Concepts & Vocabulary
TermDefinitionExample
DividendThe number that is being divided in a division problem.In 1200 ÷ 60, 1200 is the dividend.
DivisorThe number by which another number (the dividend) is divided.In 1200 ÷ 60, 60 is the divisor.
QuotientThe result obtained when one number is divided by another.In 1200 ÷ 60 = 20, 20 is the quotient.
Trailing ZeroesZeroes that appear at the end of a whole number.In the number 5000, there are three trailing zeroes.
Word ProblemA mathematical problem presented in a narrative or story format, requiring you to identify the operation needed to solve it.If you have 400 candies and want to share them equally among 20 friends, how many candies does each friend get?
EstimationFinding an approximate value that is close to the exact answer, often used to check if an answer i...
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Core Formulas
Dividing by Powers of Ten (10, 100, 1000)
$$ \frac{N \times 10^k}{10^k} = N $$ or $$ N \div 10^k = \text{remove k zeroes from N} $$
When dividing a number ending in zeroes by 10, 100, or 1000, simply remove the same number of zeroes from the dividend as there are in the divisor. For example, 5000 ÷ 100 means remove two zeroes from 5000, resulting in 50.
Simplifying Division with Trailing Zeroes
$$ \frac{A \times 10^k}{B \times 10^m} = \frac{A \times 10^{k-m}}{B} \text{ (if k >= m)} $$
If both the dividend and the divisor end in zeroes, you can 'cancel out' or remove an equal number of trailing zeroes from both numbers before performing the division. This makes the numbers smaller and easier to divide. For example, 1200 ÷ 60 can be simplified to 120 ÷ 6 by removi...
4 more steps in this tutorial
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Challenging
A video game creator earned $40,000. They put $4,000 into savings and used the rest of the money to invest equally in 20 different startup companies. How much did they invest in each company?
A.$2,000
B.$1,600
C.$1,800
D.$2,200
Challenging
A rectangular park has a total area of 4,000 square meters. If the length of the park is 80 meters, what is the width of the park?
A.50 meters
B.500 meters
C.40 meters
D.3,920 meters
Challenging
A rope is 1,500 inches long. A teacher cuts as many 70-inch pieces as possible for a science project. After cutting the pieces, how much rope is left over?
A.21 inches
B.30 inches
C.20 inches
D.40 inches
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