Parentheses & Expressions
Find the value of: (2 x 7) x 5
70
Fill in the missing number: 8 x 5 = 4 x __
10
What is the volume of a rectangular prism with dimensions 4 units wide x 5 units high x 10 units long?
200 Cubic Units
Maria's dad gets egg cartons with 72 eggs in each layer. If there are 5 layers, how many eggs are there in all?
360 eggs (72 x 5)
True or False: Volume is measured in square units.
False (Volume is measured in cubic units)
Find the value: 4 x (3 x 8)
96
Fill in the missing number: 44 x 7 = __ x 14
22
Write a multiplication expression for a building that has a volume of 200 cubic units.
2 x 10 x 10 (Or any set of factors multiplying to 200)
What strategy makes multiplying 72 x 5 easy to do mentally?
Multiply (70 x 5) + (2 x 5)= 350 + 10= 360
or double and halve 36 x 10=360
True or False: A cube with an edge length of 1 unit has a volume of 1 cubic unit.
True
Write an expression for: "To find 49 times 73, I multiply 73 times 50 and take off one group of 73."
(73 x 50) - 73 or (50 x 73) - 73
What strategy can you use to solve 6 x 12 = 12 x __ ?
The Commutative Property or 6
What are the three dimensions you multiply together to find the volume of a rectangular prism?
Length, width, and height (L x W x H)
Write an expression to find the total volume of a combined shape made of a 3 x 2 x 4 prism and a 2 x 2 x 2 prism.
(3 x 2 x 4) + (2 x 2 x 2) or 24 + 8=32
True or False: When you measure how long something is, you are finding its volume.
False (That is linear measurement/length).
(15x2) x (16รท2) or (30 x 8)
Complete the equation 20 x 6 = 10 x __?
12
If a prism has a base area of 20 square units and a height of 6 units, what is its volume?
120 Cubic Units
How do you find the volume of an L-shaped 3D building?
Split it into two simpler rectangular prisms, find each volume, and add them together.
True or False: Packing as many same-sized cubes as possible into a box gives you its volume
True
Explain how grouping with parentheses changes or stays the same using the Associative Property of Multiplication.
Grouping changes which factors you multiply first, but the product remains the same.
Complete the equation: 15 x 8 = 30 x __ ?
4
True or False: Two buildings can have different dimensions but the exact same volume.
True! (ex. 4 x 5 x 10= 200 and 2 x 10 x 10= 200)
A box holds 8 layers of blocks, and each layer has 12 rows of 5 blocks. What is the total volume in blocks?
480 Blocks (8 x 12 x 5)
What is the difference between measuring area vs. measuring volume?
Area measures 2D surface space in square units, while volume measures 3D capacity in cubic units.