IXL | Add two numbers up to seven digits: word problems

A dust storm sweeps across the prairie. It covers 41,657 acres of the prairie in dust, but leaves 31,257 acres untouched. How many acres does the prairie cover?

acres

ref_doc_title.

Learn with an example

question

A monument is made up of 17,168 sandstone blocks and 56,674 limestone ones. How many blocks make up the monument?

blocks

solution

Add the number of sandstone blocks and the number of limestone blocks.

Add:


	17,168

+	56,674

Add the ones. Add 8 + 4. Remember to regroup.


					1

	1	7	,	1	6	8

+	5	6	,	6	7	4

Add the tens. Add 1 + 6 + 7. Remember to regroup.


				1	1

	1	7	,	1	6	8

+	5	6	,	6	7	4

					4	2

Add the hundreds. Add 1 + 1 + 6.


				1	1

	1	7	,	1	6	8

+	5	6	,	6	7	4

				8	4	2

Add the thousands. Add 7 + 6. Remember to regroup.


	1			1	1

	1	7	,	1	6	8

+	5	6	,	6	7	4

		3	,	8	4	2

Add the ten thousands. Add 1 + 1 + 5.


	1			1	1

	1	7	,	1	6	8

+	5	6	,	6	7	4

	7	3	,	8	4	2

The sum is 73,842. The monument is made up of 73,842 blocks.

Looking for more? Try these:

Lesson: Multi-digit addition

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D.3Add two multi-digit numbers

I.3Add two numbers up to four digits: word problems

Lesson: Multi-digit addition

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