Evaluate
(7 x 2) x 5
70
20 x 23 = ______ x 46
10
To find 17 x 30, I double and halve.
34 x 15
Solve the volume of this box.
(4 x 6) x 3
72 units cubed
Four friends went to the museum on Saturday and paid $66.00 for all of them to get in. They wanted to split the money evenly for the tickets. How much did 1 ticket cost?
$16.50
5 x (14 x 2)
140
_____ x 24 = 18 x 12
9
To find 8 x 45, I double and halve.
4 x 90
Solve the volume of this box.
(6 x 6) x 3
108 units cubed.
There are 100 5th grade students going to outdoor ed. Today, they are leaving. If each minivan can take 15 students, how many minivans will they need to take everyone?
7 minivans
(50 x 56) - (1 x 56)
2,744
180 x 16 = 8 x _______
360
To find 27 x 9, I find 27 times 10 and remove 1 group of 27.
(27 x 10) - 27
Mrs. Williams counted the number of balls on one layer of a box, 34. The box has 8 layers. How many balls can the box hold?
272 balls
A box holds 396 balls. Each layer has 33 balls. How many layers does the box have?
12
(50 x 34) + (1 x 34)
1,734
True or false
67 x 18 = (67 x 20) - (67 x 2)
True
To find the volume of a box that has a 19 by 22 base and 27 layers, I multiply the dimensions of the base first and then multiply by the number of layers.
(19 x 22) x 27
Mrs. Pohlmann counted the number of balls on one layer of a box, 22. The box has 11 layers. How many balls can the box hold?
242 balls
Six friends baked cookies for their class party. They baked 126 cookies for 24 students. They are going to split the cookies evenly among the class. How many cookies does each student get?
5 1/4 cookies
2 x (5 x 3) + 2 x (3 x 4) + 2 x (5 x 4)
94
True or false
39 x 13 = (39 x 13) + (1 x 39)
False
To find the volume of a box that has a 23 by 35 base and 16 layers, I multiply the dimensions of the base first and then multiply by the number of layers.
(23 x 35) x 16
Mr. Farnham is having a hard time figuring out how many 1 x 1 x 1 inch bouncy balls a box can hold. The box is 12 inches wide, 4 inches long, and 6 inches tall. How many balls can the box hold?
288 balls
A box holds 648 balls. Each layer has 27 balls. How many layers does the box have?
24