IXL | Add and subtract whole numbers: word problems

A petri dish contained 43,676 bacteria. A scientist let the bacteria grow until there were 9,014 more of them. How many bacteria are there now?

bacteria

ref_doc_title.

Learn with an example

question

A crayon company recently changed its labels. It currently has 22,055 crayons with the old label and 350 crayons with the new label. How many crayons does the company have in stock?

crayons

solution

Add the numbers of crayons.

Add:


	22,055

+	350

Add the ones. Add 5 + 0.




	2	2	,	0	5	5

+				3	5	0

Add the tens. Add 5 + 5. Remember to regroup.


				1

	2	2	,	0	5	5

+				3	5	0

					0	5

Add the hundreds. Add 1 + 0 + 3.


				1

	2	2	,	0	5	5

+				3	5	0

				4	0	5

Add the thousands. Bring down the 2.


				1

	2	2	,	0	5	5

+				3	5	0

		2	,	4	0	5

Add the ten thousands. Bring down the 2.


				1

	2	2	,	0	5	5

+				3	5	0

	2	2	,	4	0	5

The sum is 22,405. The company has 22,405 crayons in stock.

Looking for more? Try these:

Lesson: Multi-digit addition

Lesson: Multi-digit subtraction

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B.3Add and subtract whole numbers

Lesson: Multi-digit addition

Lesson: Multi-digit subtraction

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