Vocabulary
What is an answer to a multiplication problem?
product
What is 8 x 100
800
3 x 4 = 12
3 x 40 = 120
3 x 400 = ?
1,200
David bought two games that cost $35 each and some headphones for $24. Which expression show how to find, t, the total amount of money he spent?
A 35 + 24 = t
B 35 + 35 + 24 = t
C 35 x 24 = t
B 35 + 35 + 24 = t
A student chair costs $24. How much would 100 student chairs cost?
2,400
What are the 5 and the 4 in this problem called?
5 x 4 = 20
factors
What is 19 x 10
190
7 x 7 = 49
7 x 70 = 490
7 x 700 = ?
4,900
Mrs. Hagins bought three chairs for $32 each and a lamp for $43. Which equation shows, t, the total amount she spent?
A 32 + 32 + 43 = t
B 32 + 43 = t
C 32 x 3 + 43 = t
C 32 x 3 + 43 = t
Alex bought 43 packages of bubble gum for the carnival. Each package had 27 pieces of gum. About how many pieces of gum did he buy?
A 800
B 1,161
C 1,200
C 1,200
53 x 6
50 x 6 = 300
3 x 6 = 18
300 + 18 = 318
What are 300 and 18?
partial products
What is 25 x 100?
2,500
4 x 5 = 20
4 x 50 = 200
4 x 500 = ?
2,000
Ms. Giles made 4 dozen cookies of a bake sale. She ate 3 cookies. Which equation shows, c, the amount of cookies she has left for the bake sale?
A (4 x 12) + 3 = c
B (4 x 12 ) - 3 = c
C 4 - 3 = c
B (4 x 12 ) - 3 = c
Karen is training to run a marathon. She runs 5 miles twice a day. How many miles will she run in 25 days?
A 250
B 125
C 30
A 250
What is the use of rounding to find a close answer to a problem? Hint: not the exact answer
estimation
What is 10 x 45?
450
5 x 7 = 35
5 x 70 = 350
5 x ? = 3,500
700
Wilson Elementary has 12 classrooms on the first floor and 15 classrooms on the second floor. Each classroom has 8 windows. Which expression shows, w, the number of windows on the second floor?
A 12 x 15 + 8 = w
B 12 + 15 + 8 = w
C 15 x 8 = w
C 15 x 8 = w
Jim baked sugar cookies and peanut butter cookies. He baked 8 sugar cookies and 3 times as many peanut butter cookies. What is the total number of cookies Jim baked?
32 cookies
array
What is 40 x 100?
4,000
If 8 x 8 is 64, what is 8 x 800?
6,400
Mrs. Lozano drives 15 miles twice a day. Which expression shows, m, the amount of miles she drives in 5 days?
A (15 x 2) x 5 = m
B 15 + 2 + 5 = m
C 15 x 5 = m
A (15 x 2) x 5 = m
Grant has 56 Pokemon cards and he received another 26 Pokemon cards for his birthday. Blake has 4 times as many Pokemon cards as Grant. How many Pokemon cards does Blake have?
328 Pokemon cards