IXL | Addition and subtraction word problems

Before the recent housing boom, there were 5,479 houses in Pike County. Now, there are 90,627 houses. How many houses did developers build during the housing boom?

houses

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Learn with an example

question

A hydroelectric plant uses water to create electricity. Before water enters the plant, it passes through two filters. Engineers found a total of 56,655 pieces of litter in the filters. There were 25,674 pieces of litter in the first filter. How many pieces of litter were in the second filter?

pieces of litter

solution

Subtract the amount of litter in the first filter from the total amount of litter.

Subtract:


	56,655

−	25,674

Subtract the ones.




	5	6	,	6	5	5

–	2	5	,	6	7	4

						1

Subtract the tens. You need to regroup first. Subtract 15 − 7.

–

Subtract the hundreds. You need to regroup first. Subtract 15 − 6.

–

Subtract the thousands. Subtract 5 − 5.

–

Subtract the ten thousands.

–

The difference is 30,981. There were 30,981 pieces of litter in the second filter.

Looking for more? Try these:

Lesson: Multi-digit addition

Lesson: Multi-digit subtraction

$Confetti$

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Now entering the Challenge Zone—are you ready?

Teacher tools

Work it out

Not feeling ready yet? These can help:

Add numbers up to six digits

Subtract numbers up to six digits

K.7Addition and subtraction word problems: up to three digits

Lesson: Multi-digit addition

Lesson: Multi-digit subtraction

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