Math in Focus Chapter 1 Review - Copy

Prime Numbers/Factorization

100

List 3 prime numbers

2, 3, 5, 7, 11, 13, 17, 23...

200

What is the opposite of a prime number called?

composite

300

What is the prime factorization of the number 54? 

2x3x3x3

400

What is the prime factorization of 72?

2x2x2x3x3

500

Find the prime factorization:

99

3x3x11

GCF and LCM

100

Find two common multiples of 6 and 8

 24, 48, 96 ...

200

Find the greatest common factor of 48 and 56

2³ or 8

300

What is the least common multiple of 6 and 8?

24

400

Find the greatest common factor of 72 and 108

2^{2 *} 3^2.  or 36

500

What is the least common multiple of 15 and 20.

60

PEMDAS

100

24 + 6 * 3 - 2

40

200

5² + 2³

33

300

sqrt(81) - 9

0

400

6(6 - 2 + 36 -:4)

78

500

6 + [(16 - 4) ÷ (2² + 2)] - 2

6

Hodgepodge

100

What is 

sqrt(1)

1

200

What is 2⁴?

16

300

A box of cards can be shared equally among 4, 5, or 6 students, with 3 cards left over each time. What is the least possible number of cards in the box?

63

400

Bus services A, B, and C leave Boston Interchange every 3, 6, and 21 minutes respectively. All three bus services first leave the interchange at 6 A.M. What time will the three bus services next leave the interchange at the same time?

6:42

500

What is the fancy name for the division bar?

vinculum