AB: required BC: required

MB: required ON: required

Teacher Resource 6.1 Unit 2 Number Sense pp. C-13–18

New Canadian Edition

JUMP Math™ Copyright © 2018 JUMP Math

NS6-3

Comparing and Ordering Numbers

Students will:

• order sets of two or more numbers, and will find the greatest and least number possible using the digits given.

AP Book 6.1 pp. 26–27

See p. C-13 for details.

435 = 400 + 30 + 5

425 = 400 + 20 + 5

Which number is greater?

Hint: How can you easily tell?

Exercises:

Circle the digits that are different, then write the greater number.

See p. C-14 for details.

342

257

Let's compare the digits, starting with the hundreds:

Which place value tells us which number is greater?

If necessary, students can make and compare the base ten models.

See p. C-14 for details.

582 = 500 + 82

574 = 500 + 74

Now I want to compare 582 and 574. We can split them this way:

What do you notice?

See p. C-14 for details.

Which is greater?

Hint: Circle the first, left-most digit that is different.

See p. C-15 for details.

214 567

21 456

From the left, these numbers seem to have the same digits:

How can I tell which is greater?

See p. C-15 for details.

We have a shortcut for this: inequality signs.

3 < 5

<

"is less than"

>

" is greater than"

Exercises:

Write "<" or ">" for the pair of numbers.

a) 32 417 ____ 276 329

b) 912 401 ____ 91 401

See pp. C-15–16 for details.

3786

2567

3084

678

2193

I want to order these numbers from least to greatest.

What strategies can we use?

Make the greatest possible number from:

See p. C-16 for details.

3

5

8

Hint: Do you have to find all the possibilities to do this?

1

4. Find the correct missing digit.

a) 3 2 5 0 < 3 ___ 1 0 < 3 3 4 8

b) 2 5 3 9 1 < 2 5 ___ 7 0 < 2 5 5 6 3