Mental Math Skills

Let's Review Our Math skills

Module 1: Ratios and Rates

Multiple Choice

Express the ratio as a fraction in simplest form:
18 ounces to 3 cups

• 6 to 1
• 1/6
• 18/3
• 3/18

Multiple Choice

What is a Ratio?

• Is a comparison of two quantities 
• A rate with a denominator of one
• It is when the only factor the numerator and denominator share is a one 
• Two decimals that can be multiplied

Multiple Choice

What is the missing number in the ratio table?

• 21
• 24
• 27
• 25

Multiple Choice

Daniel’s gym class has 35 students and 7 basketballs. What was the ratio of students to basketballs? 

• 5 to 1
• 1 to 5
• 7 to 1
• 1 to 7

Multiple Choice

What is the unit rate for the following situation:

Alice drives 250 miles in 5 hours. 

• $$\frac{250\ miles}{5\ hours}$$

• $$\frac{50\ miles}{1\ hr}$$
  

• $$\frac{125\ miles}{2.5\ hrs}$$
  

• $$\frac{1\ hr}{50\ miles}$$
  

Multiple Choice

An airplane travels 289 miles in two hours. How far can it travel in five hours?

• 722.5 mi

• 578 mi

• 500 mi

• 115/6 mi

Module 2: Fractions, Decimal and Percent

Multiple Choice

Rewrite as a decimal: $$\frac{1}{2}$$

• 50.0

• 0.050

• 1.2

• 0.5

Multiple Choice

Convert to a decimal $$\frac{3}{4}$$

• 0.25

• 0.34

• 0.75

• 3.4

Multiple Choice

Convert $$\frac{4}{5}$$ to a percent.

• 45%

• 4.5%

• 80%

• 8%

Multiple Choice

What is 0.03 as a fraction in simplest form?

• $$\frac{3}{100}$$

• $$\frac{3}{10}$$

• $$\frac{10}{100}$$

• $$\frac{3}{1000}$$

Multiple Choice

Change 0.9 to a percent

• 9%

• 0.9%

• 90%

• 900%

Multiple Choice

Roger ate $$\frac{2}{5}$$ of a pizza. What percent of a pizza did he eat?

• 40%

• 25%

• 4%

• 5%

Multiple Choice

Convert 0.25 to a fraction.

• 25/100

• 5/20

• 1/4

• 1/25

Multiple Choice

Convert 0.16 to a percent.

• 16%

• 1.6%

• 0.16%

• 4/25

Multiple Choice

What is 34 % as a decimal?

• 0.34
• 0.034
• 3.4
• 3.0034

Multiple Choice

What is 67% as a fraction?

• 67/100
• 6/100
• 100/67
• 7/100

Multiple Choice

0.125 as a percent

• 12.5%
• 1.25%
• 1/8
• 125%

Percent of a number

Multiple Choice

What is 15% of 80?

• 25

• 30

• 12

• 15

Multiple Choice

What is 20% of 120?

• 25

• 20

• 24

• 12

Multiple Choice

What is 25% of 80?

• 0

• 25

• 20

• 50

Multiple Choice

Choose the best estimate for 50% of 29.85.

• 3
• 12
• 15

Multiple Choice

What is the best estimate for 51% of 71

• 35

• 25

• 50

Find The whole

Multiple Choice

9 is 15% of ____

• 20

• 40

• 60

• 90

Multiple Choice

5 is 10% of

• 500

• 200

• 100

• 50

Multiple Choice

15 is 25% of _____________

• 20

• 15

• 60

• 25

Module 3: Compute with multi-Digit numbers and fractions

Multiply and Divide

Multiple Choice

Multiply

• 6
• 4 / 45
• 20
• 7 /45

Multiple Choice

Find the product. 

• 2/14
• 1/49
• 2/7
• 1/14

Multiple Choice

Find the product.

• 9/24
• 9/28
• 6/32
• 1/28

Multiple Choice

Multiply and simplify if possible.

• ⅝
• ¼
• 2 ⅓
• ⅘

Multiple Choice

Divide and simplify if possible.

• ¹ / ₂ ₄

• ⅛

• $$\frac{3}{8}$$

• ² / ₁ ₁

Multiple Choice

Divide and simplify if possible.

• 1 ½

• $$\frac{1}{3}$$
  

• $$\frac{2}{3}$$
  

• - ⅔

Multiple Choice

What is the quotient of these fractions in lowest terms?

• 6/40
• 6/10
• 3/5
• 12/20

Multiple Choice

• 2  2/27
• 21/2
• 1/2
• 7/8

Multiple Choice

Divide. Write in the simplest form.

$$6\ \frac{1}{2}\ \div\ 3\ \frac{1}{4}$$  

• 7

• 4

• 2

Multiple Choice

28 x 8

• 222

• 223

• 227

• 224

Multiple Choice

372 x 34

• 12,617

• 12,716

• 13,212

• 12,715

Multiple Choice

270 ÷ 3

• 9
• 90
• 900
• 9.0

Multiple Choice

2 ÷ 0.25 = _______ 

• 5
• .5
• 8
• .8

Mixed numbers to Improper Fractions

Multiple Choice

• 5/4
• 4/5
• 11/4
• 4/11

Multiple Choice

• 5/22
• 12/2
• 4/12
• 12/5

Multiple Choice

• 37/2
• 52/7
• 7/37
• 37/7

Multiple Choice

• 24/4
• 35/4
• 11/3
• 28/3

Multiple Choice

$$8\ \frac{1}{2}=\frac{?}{2}$$  

• 15

• 16

• 17

• 10

Multiple Choice

Convert the mixed fraction to a improper fraction.

• 30 /8
• 32 /8
• 34 /8
• 28 /8

Improper Fractions to Mixed Numbers

Multiple Choice

Change this Improper Fraction to a Mixed Number.

• 5 1/3

• 4 2/3

• 6

• 5 2/3

Multiple Choice

Convert to a mixed number.

• 2 2/5
• 1  7/5
• 7  1/5

Multiple Choice

Convert to a mixed number

• 4 1/2

• 2 1/4

• 5 1/2

• 4 2/1

Multiple Choice

Convert to a mixed number.

• 2  5/4
• 3 3/4
• 3  1/4
• 4  3/4

Multiple Choice

Write this improper fractions as a mixed number.

• 11   1/2
• 10   1/2
• 12   1/4
• 20

Multiple Choice

What is the improper fraction that matches this model?

• 3 2/5

• 3 5/7

• 33/7

• 33/5

Multiple Choice

A number with a whole number and a fraction is called a(n)

• whole fraction

• improper fraction

• mixed number

• simple fraction

Multiple Choice

A fraction with the numerator larger than the denominator is called a(n)

• incorrect fraction

• improper fraction

• proper fraction

• reverse fraction

Simplify Fractions

Multiple Choice

$$\frac{4}{14}\ =$$  

• $$\frac{1}{7}$$  

• $$\frac{2}{7}$$  

• $$\frac{3}{7}$$  

• $$\frac{4}{7}$$  

Multiple Choice

$$\frac{8}{10}\ =$$  

• $$\frac{1}{5}$$  

• $$\frac{2}{5}$$  

• $$\frac{3}{5}$$  

• $$\frac{4}{5}$$  

Multiple Choice

$$\frac{6}{16}\ =$$  

• $$\frac{1}{8}$$  

• $$\frac{1}{4}$$  

• $$\frac{3}{8}$$  

• $$\frac{1}{2}$$  

Multiple Choice

$$\frac{6}{18}\ =$$  

• $$\frac{1}{3}$$  

• $$\frac{2}{3}$$  

• $$\frac{1}{6}$$  

• $$\frac{2}{5}$$  

Multiple Choice

$$\frac{8}{72}\ =$$  

• $$\frac{1}{9}$$  

• $$\frac{2}{9}$$  

• $$\frac{3}{9}$$  

• $$\frac{4}{9}$$  

Multiple Choice

$$\frac{12}{20}\ =$$  

• $$\frac{1}{5}$$  

• $$\frac{2}{5}$$  

• $$\frac{3}{5}$$  

• $$\frac{4}{5}$$  

Multiple Choice

$$\frac{3}{21}\ =$$  

• $$\frac{1}{7}$$  

• $$\frac{2}{7}$$  

• $$\frac{3}{7}$$  

• $$\frac{4}{7}$$  

Multiple Choice

$$\frac{10}{12}\ =$$  

• $$\frac{2}{3}$$  

• $$\frac{3}{4}$$  

• $$\frac{5}{6}$$  

• $$\frac{6}{7}$$  

Add, subtract and multiply decimal numbers

Multiple Choice

The Taipei 101 tower is 0.509 km tall. The Sears Tower in Chicago is 0.442 km. What is the difference in their heights.

• 1.67 km

• 0.67 km

• 0.951 km

• 0.067 km

Module 4- Integers, Rational Numbers and the coordinate plane

Multiple Choice

The temperature fell eighteen degrees overnight.

• -18

• 18

• 32

• 0

Multiple Choice

An integer is.........

• A fun game.

• I have not idea

• All numbers including fractions and decimals.

• All whole numbers and their opposites.

Multiple Choice

Which integer represents a withdrawal from your bank account of $50

• -$50
• $50
• +$50

Multiple Choice

What is the opposite of 9?

• 9

• -9

Multiple Choice

What is the opposite of -42?

• 42

• -42

Multiple Choice

3____-6

• <

• >

• =

Multiple Choice

Choose <, >, or = to fill in the circle and create a true statement.

• <
• >
• =

Multiple Choice

Which symbol makes the statement true?

• <
• >
• =

Multiple Select

Which of the following inequalities are correct?

• $$-\frac{2}{7}<-\frac{3}{7}$$

• $$0>-\frac{3}{7}$$

• $$-\frac{3}{7}<-\frac{2}{7}$$

Multiple Choice

Put the following in order Greatest to Least:
-0.25, -1/3, -30%

• 30%, .25, 1/3
• 1/3, 30%, .25
• 30%, 1/3, .25
• .25, 30%, 1/3

Multiple Choice

Where is point E located?

• ( 2, 0 )
• ( 2 , 2 )
• ( 0 , 2 )
• ( 0 , 0 )

Multiple Choice

Give the coordinates for POINT I.

• (-2, 5)
• (-2, -5)
• (2, 5)
• (2, -5)

Multiple Choice

The X axis is _______?

• vertical
• diagonal
• criss-cross
• horizontal

Multiple Choice

What is the ordered pair for point A?

• ( 2, 0)
• ( 0 , 2)
• (0, -2)
• (-2,0)

Multiple Choice

Where is T?

• (-3, -2)
• (-2,-3)
• (3,2)
• (-3,2)

Multiplication timetable

Multiple Choice

9 x 8

• 27

• 63

• 72

• 82

Multiple Select

9 x 3

• 26

• 27

• 30

• 14

Multiple Select

10 x 5

• 20

• 50

• 55

• 39

Multiple Select

2 x 100

• 20

• 2

• 2 000

• 200

Multiple Select

7 x 3

• 21

• 45

• 72

• 7

Multiple Select

8 x 5

• 44

• 50

• 40

• 80

Multiple Select

6 x 6

• 36

• 56

• 72

• 15

Multiple Select

2 x 6

• 15

• 12

• 14

• 10

Multiple Select

7 x 4

• 45

• 71

• 22

• 28

Multiple Select

5 x 9

• 12

• 40

• 32

• 45

Multiple Choice

12 times 2

• 45

• 24

• 67

Multiple Choice

4 times 3

• 12

• 14

• 16

• 18

Multiple Choice

8 times 12

• 84

• 96

• 72

Multiple Choice

12 times 12

• 144

• 178

• 778

• 870

Multiple Choice

9 times 7

• 45

• 54

• 63

• 72

Multiple Choice

7 times 8

• 56

• 52

• 78

• 28

Multiple Choice

5 times 6

• 35

• 30

• 40

• 65

Multiple Choice

2 times 2

• 8

• 2

• 4

• 5

Multiple Choice

What is 3 multiplied by 4?

• 15

• 12

• 10

• 7

Multiple Choice

What is 3 multiplied by 10?

• 25

• 20

• 15

• 30

Multiple Choice

3 x 3

• 6

• 9

• 12

• 4

Multiple Choice

9x3

• 29

• 27

• 23

• 25

Multiple Choice

10X12=

• 120

• 130

• 140

• 150