Multiplication Expressions
(7 × 2) × 5 =
70
What is the volume of a rectangular prism with a length of 2 in., a width of 2 in. and a height of 1 in.? (Don't forget your units!)
4 cubic inches
8 × 4 = 2 × ___
16
1. A farmer packs 72 apples into each basket. If he fills 9 baskets, how many apples are there in total? Show your thinking.
To find 39 × 25, I multiply 40 × 25 and subtract one group of 25.
(40 x 25) - (1 x 25)
8 × (3 × 6) =
144
24 × 5 = _____ × 10
12
A toy factory packs 45 toy cars into a box. If there are 12 boxes, how many toy cars are packed? USE DOUBLE AND HALVING STRATEGY TO SOLVE. Show your thinking.
90 x 6 = 540
To find 75 × 32, I multiply 75 × 30 and add two groups of 75.
(75 x 30) + (75 x 2)
(9 × 3) × 2 =
15 × 6 = 3 × _______
30
A teacher arranges 7 chairs in a row. If there are 28 rows, how many chairs are there in all? Show your thinking. USE DOUBLING AND HALVING STRATEGY
To find 59 × 24, I multiply 60 × 24 and subtract one group of 24.
(60 x 24) - (1 x 24)
(15 × 3) × 5 =
225
25 × 4 = 2 × _________
50
A sports store sells soccer balls in packs of 8. If they sell 36 packs, how many soccer balls is that in total? Show your thinking.
288
To find 25 × 48, I multiply 25 × 50 and subtract two groups of 25.
(25 x 50) - (25 x 2)
(22 × 6) × 2 = ________
264
Ms. Rogan has two cardboard boxes. On box is 7 ft. long, 5 ft. wide, and 2 ft. tall. The other box is 8 ft. long, 7 ft. wide, and 4 ft. tall. What is the volume of the TWO cardboard boxes?
294 cubic ft.
392 x 3 = ____ x 4
294
A parent packs 64 apples into each basket for her sons field trip. If she fills 5 baskets, how many apples are there in total? Show your thinking.
320
To find 16 × 12, I double 16 and halve 12, then multiply.
32 x 6 = 192