ESL math 15 Review

Fractions

100

What do we call the fraction 1/2?

One half

200

What do we call the fraction 3/4?

Three quarters or three fourths

300

How do you write two thirds as a fraction? 

2/3

400

What do you call 24/50?

Twenty four fiftieths

500

What is an equivalent fraction to 1/2?

2/6, 3/6, 4/8, 5/10...

Decimals

100

How do we say the decimal 2.1?

Two point one

200

How do you write two tenths as a decimal? 

0.2

300

In the decimal 2.513, what is the place value name of the 3? 

Is it tenths, hundredths, thousandths, ten thousandths, hundred thousandths, millionths...

Thousandths 

400

Which number is in the ten thousandths place? 

2.1678495

8

500

Add: 

20.15+21.312

41.462

Rounding

100

Round 10.3 to the nearest one

10

200

Round 55 to the nearest ten

60

300

Round 3.125 to the nearest tenth

3.13

400

Round 1534 to the nearest hundred

1500

500

Round 1567 to the nearest thousand

2000

Multiplication

100

2x5 = 

10

200

3²=

9

300

what does 4⁵ expand to? How do we find the answer? 

4x4x4x4x4

400

what are the prime factors of 20?

2x2x5

500

What are all the number pairs that multiply to make 50? 

50x1

25x2

10x5

Adding/Subtracting

100

153-25

128

200

21+11

32

300

145-126

19

400

1536+999

2535

500

21.04+145.024

166.064