Exponent Excitement
Write the following in exponential form:
3 x 3 x 3 x 3
34
Evaluate the following:
Square root of 81
9
What does BEDMAS stand for?
B = Brackets
E = Exponents
D = Divide
M = Multiply
A = Addition
S = Subtraction
What is the difference between prime and composite numbers?
Prime = only factors are 1 and itself
Composite = more than 2 factors
Gr. 8 - Write as a standard number:
3.52 x 103
3520
Write the following as repeated multiplication:
0.55
0.5 x 0.5 x 0.5 x 0.5 x 0.5
Name 2 perfect squares
4, 9, 16, 25, 36, 49, 64, 81, 100, 144
Solve the following:
5 + 10 x 3 =
10 x 3 = 30
5 + 30 = 35
Name 3 prime numbers
3, 5, 7, 11, 13, 23, etc
Gr. 8 - Write in scientific notation
0.000742
7.42 x 10-4
Evaluate the following:
74
7 x 7 x 7 x 7 = 2401
What is the square root of 484?
22
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
Find the factors and first five multiples of 15
Factors: 1, 3, 5, 15
Multiples: 15, 30, 45, 60, 75
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
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
Estimate the square root of 52
7 x 7 = 49
8 x 8 = 64
Square root of 52 is 7.1 - 7.5
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
Is a perfect square prime or composite numbers?
Composite because they have more than two factors
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
Evaluate the following:
103 x 52
1000 x 25 = 25 000
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
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
Find the prime factorization of 72.
Use a factor tree
Answers will vary of the tree
Prime factors: 23 x 32
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