Unit 1 Math Review

Place Value

100

What is the value of the digit 7 in this number: 784

700

200

6,420- What digit is in the thousands place?

6

300

What is the value of 8 in this number? 1,280

80

400

Which number has a 5 in the ten thousands place?

a. 45,890

b. 12,501

c. 52,913

c. 52,913

500

Which number has a 9 in the tens place?

a. 9,709

b. 12,990

c. 9,812

b. 12,990

Expanded Form

100

This number is in expanded form, write it in standard form: 

1,000+200+20+5

1,225

200

This number is in expanded form, write it in standard form:

3,000+400+10+6

3,416

300

This number is in expanded form, write it in standard form:

9,000+20+9

9,029

400

Write this number in expanded form

7,890

7,000+800+90 

500

Write this number in expanded form: 501

500+1

Comparing #s

100

Put these numbers in order from least to greatest:

43, 71, 52, 12

12, 43, 52, 71

200

Put these numbers in order from greatest to least:

101, 122, 112, 210

210, 122, 112, 101

300

1,432 is ______ 1,820

use the symbol! <, >, or =

Less than<

400

430 _______ 403

use the symbol! <, >, =

>

500

Put these numbers in order from least to greatest:

1,110, 1,001, 100, 11,000

100, 1,001, 1,110, 11,000

Rounding

100

Round this number to the nearest TEN 

24

20

200

Round this number to the nearest TEN

817

820

300

Round this number to the nearest HUNDRED

771

800

400

Round this number to the nearest HUNDRED

1,612

1,600

500

Round this number to the nearest TEN

1,523

1,520

Random

100

How many groups of 10 are in this number?

1,872

7 groups of 10

200

How many groups of a hundred are in this number?

1,098

0 groups of a hundred

300

Write this number in word form

908

Nine hundred eight

400

I have 3 thousands blocks, 4 tens blocks, and 9 ones blocks. What number do I have?

3,049

500

Are 12 tens + 11 ones the same as 1 hundred + 1 ten +21 ones?

yes, they both equal 131