Envision Math: Topic 1 and 2

Expanding

100

What is the expanded form of 582.4?

(5 x 100) + (8 x 10) + (2 x 1) + (4 x (1/10))

200

Write the number 304.57 in expanded form.

(3 x 100) + (0 x 10) + (4 x 1) + (5 x (1/10)) + (7 x (1/100))

300

What does the digit 6 represent in the number 6,324.58?

6 x 1,000

400

If the number is 47.896, what is the value of the digit 8?

8 x (1/10)

500

Express 2,305.64 in expanded form.

(2 x 1,000) + (3 x 100) + (0 x 10) + (5 x 1) + (6 x (1/10)) + (4 x (1/100))

Expanding

100

What is 10²?

100

200

What is 10³?

1,000

300

Multiply 5 by 10². What is the product?

500

400

If you multiply 3.5 by 10¹, what is the result?

35

500

Explain what happens to the decimal point when you multiply 0.75 by 10².

The decimal moves two places to the right, resulting in 75.

Addition

100

What is 1.25 + 3.75?

5.00

200

Add 0.6 and 0.9.

1.5

300

What is the sum of 12.34 and 7.89?

20.23

400

4.5 + 2.25=?

6.75

500

What is 10.1 + 5.55 + 4.45?

20.20

Subtraction

100

What is 5.5 - 2.5?

3.0

200

Subtract 8.2 from 10.5.

2.3

300

What is 15.6 - 7.8?

7.8

400

Calculate 9.3 - 3.75.

5.55

500

What is the result of 20.0 - 15.6?

4.4

Decimals

100

Which is greater: 0.2 or 0.25?

0.25

200

Write 0.75 in words.

zero point seventy-five

300

Compare 0.5 and 0.50 using the symbols >, <, or =.

0.5=0.50

400

Round 3.678 to the nearest hundredth.

3.68

500

What is the value of the digit 3 in the decimal 4.736?

3/100