Unit 2 Math Review- Add/Sub: Fractions and Decimals

Adding/Subtracting Mixed Numbers

100

1 and 1/2 + 1 and 1/3 = ?

2 and 5/6

200

1 and 2/3 + 3/4

2 and 5/12

300

3 and 1/4 - 1 and 2/3 = ?

1 and 7/12

400

4 and 1/6 - 2 and 3/4 = ?

1 and 5/12

500

5 and 3/4 - 2 and 1/2 = ?

3 and 1/4

Adding/Subtracting Fractions

100

1/2 + 2/5 = ?

9/10

200

7/10 - 1/4 = ?

9/20

300

3/4 - 1/6 = ?

7/12

400

2/3 + 1/4 = ?

11/12

500

5/6 - 1/3 = ?

3/6 OR 1/2

Decimal Forms

100

Write ninety-eight hundredths in decimal form

0.98

200

Write this in decimal form: One and thirty two hundredths

1.32

300

Write this in expanded form: 2.536

(2 x 1) + (5 x 1/10 OR 0.1) + (3 x 1/100 OR 0.01) + (6 x 1/1,000 OR 0.001)

400

seven-hundredths in decimal form

0.07

500

0.206 in word form

Two hundred six thousandths

Powers of 10

100

10² is equivalent to...

100

200

1,000 is 10^?

10³

300

0.1 divided by 10² =

0.001

400

3.4 x 10^? = 340

10²

500

1,258 divided by 10^? = 1.258

10³

Adding/Subtracting Decimals

100

Adding Decimals

45.56 + .36

45.92

200

Subtracting Decimals

3.45-.23

3.22

300

Adding Decimals

0.45 + 9.56

10.01

400

Subtracting Decimals

4.56 - 3.24

1.32

500

Adding Decimals

1.45 + 4.56 + .67

6.68

Ordering/Rounding Decimals

100

Put in order least to greatest

0.45, 0.68, 1.56, 0.23

0.23, 0.45, 0.68, 1.56

200

Round to the nearest TENTH 12.35

12.3   NOT 12.30

300

Least to Greatest

3.002, 3.123, 0.302, 1.230

0.302, 1.230, 3.002, 3.123

400

Greatest to least

.09, 1.00, .009, .9

1.00, .9, .09, .009

500

Round to the nearest whole- 3.64

4.0