Review Time

Exponent Excitement

Square Roots

BEDMAS

Prime Time

Scientific GCF, LCM

100

Write the following in exponential form:
3 x 3 x 3 x 3

3⁴

100

Evaluate the following:

Square root of 81

100

What does BEDMAS stand for?

B = Brackets

E = Exponents

D = Divide

M = Multiply

A = Addition

S = Subtraction

100

What is the difference between prime and composite numbers?

Prime = only factors are 1 and itself

Composite = more than 2 factors

100

Gr. 8 - Write as a standard number:

3.52 x 10³

3520

200

Write the following as repeated multiplication:
0.5⁵

0.5 x 0.5 x 0.5 x 0.5 x 0.5

200

Name 2 perfect squares

4, 9, 16, 25, 36, 49, 64, 81, 100, 144

200

Solve the following:

5 + 10 x 3 =

10 x 3 = 30
5 + 30 = 35

200

Name 3 prime numbers

3, 5, 7, 11, 13, 23, etc

200

Gr. 8 - Write in scientific notation

0.000742

7.42 x 10^-4

300

Evaluate the following:

7⁴

7 x 7 x 7 x 7 = 2401

300

What is the square root of 484?

300

Solve the following:

(15 - 7) x 25 divided by 5 =

(15 - 7) = 8

8 x 25 = 200

200 divided by 5 = 40
Answer is 40

300

Find the factors and first five multiples of 15

Factors: 1, 3, 5, 15
Multiples: 15, 30, 45, 60, 75

300

Gr. 7 - Find the GCF between 24 and 36

24: 1, 2, 3, 4, 6, 8, 12, 24
36: 1, 2, 3, 4, 6, 9, 12, 18, 36

The GCF is 12

400

Evaluate the following:
1.5⁵

(Round to the nearest hundredth)

1.5 x 1.5 x 1.5 x 1.5 x 1.5 = 7.59

400

Estimate the square root of 52

7 x 7 = 49
8 x 8 = 64

Square root of 52 is 7.1 - 7.5

400

Solve the following:

2.5 x 2 + (25 - 21)² =

(25 - 21) = 4
4²= 16
2.5 x 2 = 5
5 + 16 = 21
The answer is 21

400

Is a perfect square prime or composite numbers?

Composite because they have more than two factors

400

Gr. 7 - Find the LCM between 8 and 14

8: 8, 16, 24, 32, 40, 48, 56, 64
14: 14, 28, 42, 56

The answer is 56

500

Evaluate the following:

10³x 5²

1000 x 25 = 25 000

500

Which number is bigger?
5 OR the square root of 23

5

5 x 5 = 25
4 x 4 = 16
Square root of 23 must be between 4 and 5

500

Solve the following:

7 x [5 + (30 - 12)] - 35=

(30 - 12) = 18
5 + 18 = 23
7 x 23 = 161
161 - 35 = 126
Answer is 126

500

Find the prime factorization of 72.
Use a factor tree

Answers will vary of the tree

Prime factors: 2³x 3²

500

Gr. 8 - Ms. Locke can do about 12 push ups in one minute. How many push ups can she do in 10 hours?

Represent the number in scientific notation

12 x 60 = 720 in 1 hour
720 x 10 = 7200 in 10 hours

7.2 x 10³