GCF/LCM
Determine the LCM of 80 and 120
80 = 2 x 2 x 2 x 2 x 5
120 = 2 x 2 x 2 x 3 x 5
240
use mental math to calculate the square roots for the following numbers.
400, 81, and 121
20, 9, 11
Evaluate
23 + 32
13
Find the value
2a + 7, when a = 3
13
Write as a power and evaluate:
2x2x2x2x2x2x2x2x2x2
29 = 512
What are three common factors of 14 and 84
1,2,7,14
Give a reasonable estimate for the square root of 102
slightly more than 10 but much less than 11 (100 and 121 respectively)
Accepted answers 10.1 or 10.2
Evaluate (7-3)2 + (7+1)2
80
Find the value of
10e -2f, when e =4 and f=5
20
Identify the base and exponent in 108
Base - 10
Exponent - 8
Determine the GCF of 63 and 84
21
Estimate the square root of 138
More than 11 and less than 12
11.7 or 11.8
Place brackets to make the equation true
20 - 3 x 2 + 5 = 9
20 - ((3x2) +5) = 9
Solve
2n + 3 = 19
n = 8
Determine the missing number in the prime factorization: 297 = ___3 x 11
33 x 11
Jordan and Manny are on the track and field team. Running around the track one day, Jordan ran 444m and Manny ran 777m. They both ran a whole number of times around the track. How far around is the track?
111m
A square field has an area of 625 m2. What are its dimensions
25m
Evaluate (1 + 5 + 3)2 x (4 x 2 - 7)
81
Determine the prime factorization of 164
22 x 41 = 164
Tamara paid 3.00 for cartons of milk. Teo paid 3.75 for a different number of cartons at the same store. How many cartons did each person buy?
Tamara bought 4 and Teo bought 5
60
The teacher has 15 gold prize ribbons, 22 blue ribbons and 53 red ribbons. There are 12 boys and 18 girls in the class. If the teacher divides the ribbons equally among the students, how many ribbons will each student have?
*Hint write an expression using brackets to help you solve
(15 + 22 + 53) / (12 + 18) = 3
During a magic trick, a magician shows the audience 3 closed bags. Each bag contains an equal number of jewels. The magician's assistant reaches into one bag and takes out 4 jewels. The magician tells the audience that there are now a total of 14 jewels left in the 3 bags.
Write the equation AND solve using balance (you must show all the steps)
3b - 4 = 14
3b - 4+4 = 14+4
3b = 18
3b/3 = 18/3
b=6
Mr Henwood tore a piece of paper into 3 parts. He tore each part into 3 more parts. If Mr Henwood repeated this action 12 times in total, how many pieces of paper would he have?
312 = 531,441