Discovery - Multiplication

MultiplicativeIdentity

100

3/4 x 1

3/4

200

-17 x _____ = -17

1

300

√3 x 0 = 

0

400

5.787878 x ______ = 0

0

500

1/3 x _____ = 1

3/1 

MultiplicativeInverse

100

Give the Multiplicative Inverse (Reciprocal) of 2/3

3/2

200

Give the Multiplicative Inverse (Reciprocal) of 18

1/18

300

Give the Multiplicative Inverse (Reciprocal) of 57%

Hint: Convert to Fraction First

100/57

400

Give the Multiplicative Inverse (Reciprocal) of 2 3/5 

Hint: Convert to Fraction first

5/13

500

Give the Multiplicative Inverse (Reciprocal) of 0.02406

Hint: Conver to Fraction first

100,000/2406

MultiplyingIntegers

100

15 x 20

300

200

5 x (-4)

-20

300

(-3) x (-7) 

21

400

(-100) x (-273) 

27,300

500

(-6,000) x (20)

-120,000

Exponents

100

5³

125

200

(-2)⁵

-32

300

(-3)⁴

81

400

10⁵

100,000

500

(-10)^7

-10,000,000

Multiplying Fractions

100

7 x 5/12

35/12

200

1/3 x 5

5/3

300

1/10 x 3/13

3/130

400

-3/5 x 2/11

-6/55

500

-5/3 x 4/9

-20/27

Multiplying in Simplest Terms

100

3/7 x 7/5

3/5

200

13/19 x 12/13

12/19

300

21 x 4/21

4

400

4/35 x 21/5 

Hint: Are there numbers in common? 

12/25

500

2 1/4 x 1 2/5 

63/20 OR 3 3/20

Misc

100

Two main operations on the Real Numbers are __________ and ___________. 

addition and multiplication 

200

The fact that 3x4 = 4x3 is an example of the __________ property of multiplication. 

Commutative

300

What is the Main Principle of Multiplication? 

You can multiply ANYTHING by ANYTHING. 

400

(-1/10)³

-1/1,000

500

5/7 x 4 9/10

245/70 OR 3 1/2 OR 3.5