Problem Solving
Multiplication
Division
Potpourri
100
You spend 1/4 hour building 5 lego structures. If each took the same amount of time, how long did each one take to build?
1/20 hour or 3 minutes
100
2/3 × 3/7
2/7
100
5 ÷ 9
5/9
100
What is Mr. Lam's favorite sport to play?
Basketball
200
At a party, a group of 40 people need to share 2 giant cakes. How much cake does each person get?
Each person gets 1/20 of a cake.
200
9/10 × 5/12
3/8
200
5 ÷ 1/5
25
200
What computer game company did Mr. Lam once work for?
Blizzard
300
Gavin has two hours to make lumpia. It takes him 1/3 minute to make each one. How many lumpia can he make?
360 lumpia
300
4 1/3 × 6
26
300
1/8 ÷ 4
1/32
400
In a hot dog eating contest, Danny ate 6 1/2 hot dogs. Danny ate 3/4 as much as Thomas. How many hot dogs did Thomas eat?
8 2/3 hot dogs
400
1 1/3 × 2 5/8
3 1/2
400
2 3/8 ÷ 1/4
9 1/2
500
A clothing company delivered a shipment of clothes to a store. 1/4 of the shirts were white. 1/3 of the shirts were blue. The remaining shirts were black. If they shipped 12 white shirts, how many black shirts did they ship?
20 black shirts
500
2/7 × 1 3/4 × 8/9
4/9
500
6 5/6 ÷ 5
1 11/30
500
[Final Jeopardy!] You have a 3-layer cake. The strawberry layer is 2 ½ inches tall. This is double the height of the chocolate layer. The height of the vanilla layer is 7/10 of the height of the strawberry layer. There is a ⅕ inch layer of frosting between each layer of cake and a ⅖ inch layer of frosting on the top of the cake. How tall is the cake?
6 3/10 inches