Number Sense Review!

Representing Numbers

100

Read this number: 8 432 489 200

eight billion, four hundred thirty two million, four hundred eighty nine thousand, two hundred thousand.

200

What is the expanded form of this number: 

98 432 241

90 000 000 + 8 000 000 + 400 000 + 30 000 + 2 000 + 200 + 40 + 1 

300

Write 10⁶ in expanded form

10 x 10 x 10 x 10 x 10 x 10 

400

What is the standard form of 8.2 x 10⁷ ?

82 000 000

500

Write 43 000 000 in scientific notation? 

4.3 x 10⁷

Integers

100

Which is greater?  - 3  or 4

4 

200

Order the following integers: 

- 7, 15, -2.5, 3

-7, -2.5, 3, 15

300

What is 6²?

36

400

What is the square root of 121?

11

500

√225?

15

Decimals, Fractions, & Integers

100

True or False : -10 > -8 ?

False, - 8 is greater because it is closer to zero.

200

Name an integer between -2 and 3

Could be -1, 0, 1, or 2

300

> , < , =

-2.5  ____ -1/2

-2.5  < -1/2

400

> , < , =

-0.75 ____ -3/4

-0.75 = -3/4

500

1.22 _____ - 1 1/3

1.22 <  -1 1/3

Reading & Rounding Decimals

100

Write the decimal: 

zero and three tenths

0.3

200

Write the decimal:

ninety two and three hundred and seventy two thousandths

92.372

300

Round the decimal to the nearest tenth

3.421

3.4

400

Round the decimal to the nearest hundredth

0.899

0.9

500

Is 7.52 closer to 7.5 or 7.6?

7.5