GCF and LCM
LCM of 5 and 20
20
16.48 divided by 8
2.06
36 + 72
8 x (6 + 9)
5 - 1.836
3.164
What's the first and second rule of dividing?
First, put the first number in the house and the divisor. Second, cover the house.
LCM of 10 and 15
30
8.6 x 4.1
35.26
24 + 8
8 x (3 + 1)
2.358 + 1.08
3.438
What the first rule of adding and subtracting decimals?
Line up the decimals!
GCF of 18 and 45
9
49.14 divided by 21
2.34
18 + 24
6 x (3 + 4)
43.53 + 27.67
71.20
What's the first rule of dividing decimals (after putting them in the house)?
If it has a decimal for the divisor, MOVE IT! MOVE IT!
GCF of 72 and 96
24
1.9 x 8.43
16.017
35 + 70
7 x (5 + 10)
3.92 + 16 + 0.085
20.005
What's the last thing you do when multiplying or dividing decimals?
RAISE THE ROOF! (move the decimal up)
There are 147 people attending a dinner party. If each table can seat 7 people, how many tables are needed for the dinner party?
21 tables
(53.2 + 35.7) divided by 7
12.7
12 + 8
4 x (3 + 2)
27.29 - 19.39
7.90
What do you do when you move decimals in the house and there's no numbers left?
ADD A ZERO