Evaluate Expressions
Evaluate 4 X (13 X 2)
104
Fill in the blank:
__X 16=8 X 12.
6
Fill in the missing number:
140 X 12=7 X __.
240
Write an expression for finding 18 X 12 by doubling one factor and halving the other.
9 X 24
Three classmates share
$84.00
equally. How much does each person receive? Write an equation.
$28.00
(6 X 5) X 8
240
Fill in both blanks:
__ X 15=5 X 21=__.
7
True or false? Explain using a number relationship:
48 X 19=(48 X 20)−48.
TRUE
Write an expression for finding 34 X 19 by multiplying 34 X 20 and removing one group of 34.
(34 X 20) - ( 1 X 34)
A school group has
121 students. Each bus holds 18
students. How many buses are needed? Write an equation and explain what happens to the remainder.
6 R 13. They would need 7 buses.
Evaluate 3 X (4X5)+3 X (5X6)+3 X (4X6)
222
Complete the equation:
36 X 97=(__ X 36)−(3 X 36)
100
True or false? Explain:
26 X 14=(26 X 14)+14.
FALSE
Write an expression for the volume of a box with a base measuring 16 by 23 units and 15 layers.
5,520 cubic units
A container holds
432 balls arranged in layers of 36 balls. How many layers are there? Write an equation.
12 layers
Evaluate
(40 X 37)−(13 X 7)
1,389
Fill in the blank:
28 X 45=14 X __.
90
True or false? Explain using the associative property: (3X7) X 5=3 X (7 X 5).
TRUE
Write and solve an equation for 28 x 25 using double and halve.
14 x 50, 7 x 100=700
A box has 9 layers with 27 balls in each layer. How many balls are in the box? Write an equation.
243 balls
Evaluate 7 X (25 X 4). Show how grouping helps.
700
Complete both blanks:
52 X 99=(100 X 52)−(1 X 52)=__
5,148
Fill in the blank without first finding the product:
225 X 16=9 X __. Explain how you know.
400
A rectangular prism is 8 cubes long, 5 cubes wide, and 6 cubes high. Write and solve an equation for its number of unit cubes.
(8 x 5) x 6=240
Four friends made cookies. They each ate two cookies each right away. They divided the remaining 30 cookies. How many did each receive?
7 2/4 cookies