Dividing a number to 1,000 by 10

Students learn to divide a number to 1,000 by 10.

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The students learn to divide a number to 1,000 by 10.

CCSS.Math.Content.4.NBT.B.6 / 4.NBT.A.1

Students will be able to divide a number to 1,000 by 10.

The students solve the division problems with numbers to 100.

Explain that when you divide by 10 you discover how many tens are in the given number. Show this using the problem 700 ÷ 10. Show that 100 has 10 tens, 200 has 20 tens, and that this continues to 700 having 70 tens. Have students practice determining how many groups of ten are in the multiples of 100. Now show the problem 180 ÷ 10. Explain that you also determine multiples of ten in these problems, but you determine how many tens are in the hundreds and in the tens. You show that 100 has 10 tens, and 80 has 8 tens, and together there are 18 tens in 180. Have students determine the groups of ten in the next set of numbers. Show the story problem and walk the students through the steps of solving it. Next the students solve the following two story problems on their own.

Check whether the students can divide a number to 1,000 by 10, by asking the following question:

- How do you solve a problem with a number to 1,000 in which you are dividing by 10?

The students test their understanding of dividing a number to 1,000 by 10 by completing ten exercises. Some of the exercises are abstract division problems, and others are story problems.

Discuss once again the importance of being able to divide a number to 1,000 by 10. As a closing activity you can have the students determine which problems are correct, and which are not.

Have students that have difficulty calculating a division problem with a number to 1,000 by 10 first practice with dividing numbers to 100 by 10.

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