Unit 1 Operation Computation

Multiplication

100

96 x 8 = ?

768

200

What is the product of 13 and 22?

286

300

Find the product of 38 and 47 *BONUS* 200 points: How can you check your answer to be sure you are correct? (not using multiplication, another person, or a special tool...)

1,786 *BONUS* 1,786 / 38 = 47 OR 1,786 / 47 = 38

400

Find the missing digit value in the following equation: 5_ x 63 = 3,402

4 (54 x 63 = 3,402)

500

416 x 84 = ?

34,944

Division

100

In this equation, correctly name the divisor, the quotient, and the dividend: 56 / 7 = 8

Divisor: 7 Quotient: 8 Dividend: 56

200

97 / 3 = ? *BONUS* 300 points: If 94 stands for the total number of ounces of ORT collected during one day at Nature's Classroom and 3 stands for the number of meals eaten in one day, on average how many full pounds of ORT are collected at each meal? (Assume the same amount of ORT is collected at each meal)

32 R1 *BONUS* 2 lbs.

300

Find the quotient of 456 divided by 7

65 R1

400

706 / 39 = ?

18 R4

500

1,036 divided by what number is 37?

28

Decimals

100

12.34 divided by 2

6.17

200

DAILY DOUBLE! 3.456 x .3

1.0368

300

Write a multiplication equation for the following:

.3 + .3 + .3 + .3 + .3  + .3  + .3 + .3

.3 x 8 = 2.4  or  8 x .3 = 2.4

400

56.98 - 7.4

49.58

500

5.632 divided by 4

1.408

Potpourri

100

A solution to any word problem must contain this.

What is a unit of measure.

200

Place a parentheses in the following equation to make it true.  5 x 3 + 2 - 5 x 1 = 20

5 x (3 + 2) - 5 x 1 = 20

300

Express 600,000 using powers of ten

6 x 10 to the fifth power

400

Express 80,000,000 using powers of ten

8 x 10 to the seventh power

500

Find the missing value in the following equation: __ x 10 to the tenth power = 10,000,000,000

1

Order of Operations

100

Find the value of the following expression: 28 - 3 x 3 + 8

27

200

Evaluate this expression: 4 + (48 / 3) - (8 + 4) *BONUS* 300 points: Are each set of parentheses in the equation necessary? Explain/prove why or why not.

8 *BONUS* The first set is not necessary but the second set is because if you took them away, you would be doing steps in a different order and it would lead to a different answer: 4 + 48 / 3 - 8 + 4 4 + 48/3 - (8+4) 4 + 16 - 8 + 4 4 + 48/3 - 12 20 - 8 + 4 4 + 16 - 12 12 + 4 = 16 20 - 12 = 8

300

38 - (9 + 132/12 - 2 x 3)

24

400

Place parentheses to make the following equation true: 3 + 5 x 7 - 28/4 = 49

(3 + 5) x 7 - 28/4 = 49

500

Write a numerical expression to match: six times the quantity of three more than seven, minus four more than three groups of eight

6 x (7 + 3) - 4 + (3 x 8)