Math 7 Rational Number Operations Jeopardy

Comparing & Ordering Decimals, Converting Fractions & %

100

Compare these rational numbers. Use >, <, or =

5.5       5 2/3

5 1/2  <  5 2/3

200

|-7.4| ___ |7.4|

=, less than <, or greater than >

=

300

Convert this fraction to a decimal.

6 5/8

6.625

400

Order the following from least to greatest:

1.6801, -1 1/2, 1.68, -1.76

-1.76, -1 1/2, 1.68, 1.6801

500

Convert this repeating decimal into a fraction in simplest form.

0.666...

2/3

Adding & Subtracting Rational Numbers

100

Add these rational numbers. 

-12.4 + 8.39

-4.01

200

Joaquin recorded a temperature of 62°F this morning for science class. The temperature increased 6 1/2 °F in the afternoon before decreasing 8.7°F in the evening. What was the evening temperature?

59.8 or 59 4/5

300

Add these rational numbers. 

-3 1/3 + 2 1/2

-5/6

400

Subtract these rational numbers.

-23.01 - 8.2

-31.21

500

Subtract these rational numbers.

-5/6-(-0.8)

-1/30

Multiplying and Dividing Rational Numbers

100

Multiply rational numbers 

(Simplify any FRACTION answers)

0.47 * 5.6

2.632

200

Multiply rational numbers (Simplify any FRACTION answers)

2.3*(-1.4)*1.1

-3.542

300

Multiply rational numbers (Simplify any FRACTION answers)

-5 2/3*(-1 1/2)

8 1/2

400

Divide rational numbers (Simplify any FRACTION answers)

1/2 ÷ 3

1/6

500

Divide rational numbers (Simplify any FRACTION answers)

-9 9/10 ÷ (-2 3/4)

3 3/5

Rules & more

100

When adding or subtracting, if two numbers have the same sign we...

Add and keep the sign

200

When adding or subtracting, if the signs are different we...

Subtract and keep the sign of the bigger number

300

With multiplication and division of integers, when we have two negatives, the result is...

positive

400

Evaluate each expression by substituting the variable.

b= 0.03

c= -1.8

Solve for: c ÷ b

-1.8 ÷ .03=

-60

500

Evaluate each expression by substituting the variable.

a= -0.4

b= 0.03

Solve for: ab

(-0.4)(0.03)=

-0.012 or -.012

Bonus Questions

100

Convert these fractions to their decimal values.

2/3

0.hat6

200

 Compare these rational numbers. Use >, <, or =

-10 2/3    -10.75

-10 2/3 < -10.75

300

Add these rational numbers. (Simplify any FRACTION answers)

12 2/5 + (-5 1/3)

7 1/15

400

Divide rational numbers (Simplify any FRACTION answers)

3 ÷ (-0.375)

-8

500

Evaluate each expression using the order of operations. 

2/5+3/7-5 2/3÷1/3

-16 6/35