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

After a fire, there were only 1,221 trees left in the forest. But the fire didn't just destroy trees. It also caused the seeds in some pine cones to sprout. One year later, there are 9,709 baby trees, or saplings growing. How many trees are in the forest now?

trees

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Learn with an example

question

A chocolate factory usually makes 79,025 chocolates per month. In the month before Valentine's day, it makes 99,827 more than that. How many chocolates does the factory produce in that month?

chocolates

solution

Add the numbers of chocolates.

Add:


	79,025

+	99,827

Add the ones. Add 5 + 7. Remember to regroup.


					1

	7	9	,	0	2	5

+	9	9	,	8	2	7

Add the tens. Add 1 + 2 + 2.


					1

	7	9	,	0	2	5

+	9	9	,	8	2	7

					5	2

Add the hundreds. Add 0 + 8.


					1

	7	9	,	0	2	5

+	9	9	,	8	2	7

				8	5	2

Add the thousands. Add 9 + 9. Remember to regroup.


	1				1

	7	9	,	0	2	5

+	9	9	,	8	2	7

		8	,	8	5	2

Add the ten thousands. Add 1 + 7 + 9.


	1				1

	7	9	,	0	2	5

+	9	9	,	8	2	7

1	7	8	,	8	5	2

The sum is 178,852. The factory produces 178,852 chocolates in that month.

Looking for more? Try these:

Lesson: Multi-digit addition

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Teacher tools

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Not feeling ready yet? These can help:

Add numbers up to six digits

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

Lesson: Multi-digit addition

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