Vocabulary
What is another name of the answer to a multiplication problem?
Product
100 x 4
100 x 4 = 400
22 x 12
22 x 12 = 264
Elaina went to a garage sale to buy chairs. Each chair cost 15 dollars. How much money did Elaina spend for the 12 chairs she bought?
1 x 15 = 15
12 x 15 = 180
Elaina spent $180 on the chairs she bought
At the fall festival Ned rode the ferris wheel 7 times and the bumper cars 3 times. If each ride costs 6 tickets, how many tickets did he use?
7 x 6 = 42
3 x 6 = 18
42 + 18 = 60
Ned used 60 tickets
What is the name for the numbers being multiplied together?
Factors
351 x 5
351 x 5 = 1,755
54 x 46
54 x 46 = 2,484
Albert has snakes. The garden snake is 10 inches long. The boa constrictor is 7 times longer than the garden snake. How long is the boa constrictor?
10 x 7 = 70
The boa constrictor is 70 inches long
At his local arcade, Andy has earned 14 tickets playing an electronic dance game. Mark earned 12 times as many tickets. Do they have enough combined to get a prize that costs 200 tickets?
14 x 12 = 168
No, Andy and Mark only have 168 tickets altogether
The operation of adding the same quantity many times.
Multiply
644 x 7
644 x 7 = 4,508
66 x 66
66 x 66 = 4,356
Mary can swim at a speed of 12 miles an hour. How far can she swim in 31 hours?
12 x 1 = 12
31 x 12 = 372
Mary can swim 372 miles in 31 hours
A box of eggs holds 12 eggs. If Brooke has 4 boxes of eggs and Jack has 8 boxes, how many eggs do they have altogether?
4 x 12 = 48
8 x 12 = 96
96 + 48 = 144
Brooke and Jack have 144 eggs altogether
This phrase states that when two numbers are being multiplied, changing the order of the numbers that are being multiplied does NOT change its answer.
Commutative Property of Multiplication
796 x 8
796 x 8 = 6,368
88 x 42
88 x 42 = 3,696
Tammy drove 55 miles in one hour. At that rate, how far can she drive in 36 hours?
55 x 36 = 1980
Tammy can drive 1,980 miles in 36 hours
Calvin paints pictures and sells them at art shows. He charges $56 for a large painting. He charges $25 for a small painting. Last month he sold 6 large paintings and 3 small paintings. How much did he make in all?
56 x 6 = 336
25 x 3 = 75
336 + 75 = 411
Calvin made $411 in all of the paintings that he sold
These 'clue words' help to think about what kind of math the word problem is describing
each, of
989 x 9
989 x 9 = 8,901
76 x 49
76 x 49 = 3,724
Rob could run 7 miles in one hour. At that rate, how far could Rob run in one day (that's 24 hours)?
7 x 1 = 7
7 x 24 = 168
Rob could run 168 miles in one day
Brayden was playing touch football against Cole. Touchdowns are worth 7 points. Brayden's team scored 7 touchdowns, and Cole's team scored 9 touchdowns. How many more points did Cole's team have than Brayden's?
7 x 7 = 49
9 x 7 = 63
63 - 49 = 14
Cole had 14 more points than Brayden