Arrays and multiplying 2-digit numbers
Expanded Algorithm
Multiplying 2-digit numbers by multiples of 10
Multiplying 2-digit by 2-digit numbers
Problem solving: Two questions problems
100
Each of the 27 students in Mr. Moro's class brought in 18 aluminum cans during the class recycling drive.
How many aluminum cans did Mr. Moro's class collect in all?
A) 476
B) 486
C) 586
D) 596
B) 486
100
Noriko multiplies 13 × 45.
Which of the following is NOT a partial product?
A) 15
B) 50
C) 90
D) 400
C) 90
100
17 students each brought in 20 cookies for the school bake sale.
How many cookies were there at the bake sale?
A) 400
B) 380
C) 360
D) 340
D) 340
100
Jacob reads 68 pages each night.
How many pages does Jacob read in a month with 31 days?
A) 2,108
B) 2,208
C) 2,618
D) 2,868
A) 2,108
100
Doug spent 16 days at summer camp. Each day, he spent 4 hours at arts and crafts.
Each hour at arts and crafts, he made 3 drawings.
How many drawings did he make while at summer camp?
A) 192
B) 112
C) 48
D) 12
A) 192
200
There are 27 students in Mrs. Langley's class. Each student does 15 math homework problems each night.
How many math problems in all does the class do in one night?
A) 405
B) 305
C) 300
D) 255
A) 405
200
Which of these groups of numbers lists the partial products for 26 × 14?
A) 280, 24
B) 200, 80, 60, 24
C) 200, 2, 6, 24
D) 20, 8, 60, 24
B) 200, 80, 60, 24
200
A state park area has 33 rows of trees. Each row has 90 trees.
How many trees are in the state park ?
A) 2,700
B) 2,770
C) 2,970
D) 5,400
C) 2,970
200
A large college textbook has 37 pages in each of its 41 chapters.
How many pages are in the textbook?
A) 1,173 pages
B) 1,247 pages
C) 1,491 pages
D) 1,517 pages
D) 1,157 pages
200
Joseph baked 8 dozen large muffins for a bake sale. He sold the muffins for $3 each. How many muffins did Joseph bake? If he sold all the muffins, how much money did he make for the bake sale?
A) 80 muffins; $240
B) 80 muffins; $280
C) 96 muffins; $278
D) 96 muffins; $288
D) 96 muffins; $288
300
This array shows 24 rows of 27 squares.
Which shows the factors for the part shaded in gray?
A) 4 × 20
B) 7 × 27
C) 4 × 7
D) 4 × 27
C) 4 x 7
300
There are 18 classrooms in Jeffrey's school. Each classroom has 27 students. Jeffrey is using the table below to calculate how many students are in the school. Which number is missing from the table?
A) 28
B) 160
C) 208
D) 486
B) 160
300
In a school yearbook, 40 pages have photographs of students. There are 16 photographs on each page. How many student photographs are shown?
640 photographs
300
Multiply.
86× 88
7,568
300
A department store had 18 boxes of T-shirts. Each box held a dozen T-shirts. The store sold the T-shirts for $8 each. How many T-shirts did the store sell? What was the total amount of money the store made?
A) 216; $1,728
B) 216; $1,688
C) 180; $1440
D) 180; $840
A) 216; $1,728
400
This array shows 24 rows of 27 squares.
Which shows the factors for the part shaded in gray?
A) 4 × 20
B) 4 × 27
C) 7 × 20
D) 4 × 7
A) 4 x 20
400
What is 23 × 27?
A) 541
B) 607
C) 621
D) 721
C) 621
400
Which number sentence is TRUE?
A) 50 × 60 = 300,000
B) 50 × 600 = 300,000
C) 50 × 6,000 = 300,000
D) 50 × 60,000 = 300,000
C) 50 × 6,000 = 300,000
400
Ms. Duran has had average of 28 students in her class every year.
How many students has she taught in her 35 years of teaching?
980 students
400
Terry bought 10 boxes of drinking glasses. Each box contained 12 drinking glasses, and each glass cost $3. How many drinking glasses did Terry buy? How much did Terry spend, before tax?
A) 120 drinking glasses; $360
B) 120 drinking glasses; $390
C) 100 drinking glasses; $300
D) 36 drinking glasses; $108
A) 120 drinking glasses; $360
500
What product does this array show?
A) 17 × 29
B) 7 × 29
C) 17 + 29
D) 17 × 153
A) 17 x 29= 493
500
What numbers complete the calculation?
A) 42 and 872
B) 35 and 965
C) 12 and 942
D) 42 and 972
D) 42 and 972
500
Lincoln can type 58 words a minute.
How many words can he type in one hour?
3,480 words
500
A newborn manatee weighs 65 pounds. The mother manatee weighs 17 times as much. How much does the mother manatee weigh?
1,105 pounds
500
Eighteen students from each fourth-grade class took part in a charity walk. There are 4 fourth-grade classrooms. Each student raised $12 in the charity walk. How many fourth-grade students took part in the charity walk? What was the total amount of money they raised?
A) 54 students; $594
B) 54 students; $648
C) 72 students; $792
D) 72 students; $864
D) 72 students; $864