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AB: required BC: required

MB: required ON: required

Teacher Resource 6.1 Unit 2 Number Sense pp. C-3–8

New Canadian Edition

JUMP Math™ Copyright © 2018 JUMP Math

NS6-1

Place Value

Students will:

• identify the place value and the actual value of digits in numbers �with up to seven digits; and

• write numbers with up to nine digits using words.

AP Book 6.1 pp. 21–23

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Repeat with several numbers. See p. C-3 for details.

I will underline digits.

Can you tell me their place value?

2 3 9 8 9

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Exercises:

Find the place value of the digit 4 in each number.

a) 24 001

b) 42 305

c) 34

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Exercises:

Write the place value of the digit 3 in the number.

a) 312 607

b) 453 207

c) 3 762 906

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See p. C-4 for details.

Here is a 5-digit number.

What is the actual value of each of its digits?

28 306

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See p. C-4 for details.

What is the value of the zero in .... ?

8097

Zero always has a value of zero, no matter what its place value is.

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Which digit, the 5 or the 3, is worth more?

2350

See p. C-4 for suggested phrasing.

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325 = three hundred twenty-five

See note on p. C-4.

Remember: When we write or say a number in words, we don't put an "s" on the end of hundred. We also don't use the word "and."

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Exercises:

Write the number in words.

a) 412

See note on p. C-4.

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2000 = two thousand

no "s"

See p. C-5 for details.

17 000 =

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There is a new word every 3 place values:

ones

tens

hundreds

thousands

ten thousands

hundred thousands

millions

ten millions

hundred millions

billions

ten billions

hundred billions

See p. C-5 for details.

Hint: This is why we put breaks every 3 digits in our numbers.

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See p. C-5 for details.

___ ___ ___

___ ___ ___

___ ___ ___

___ ___ ___

billions

millions

thousands

These breaks help us read large numbers quickly.

3

4

5

6

7

2

0

6

0

3

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Exercise:

Write the number with the proper spaces, then write the number word.

87301984387

We use spaces only in numbers with at least five digits.

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Exercises:

1. Write the number using numerals.

There are about two hundred fifty billion stars in our galaxy.

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Scientists say that life first appeared on Earth about three billion, eight hundred million years ago.

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