Module 1: Multiplication and Division
Which number sentence can be used to determine the value of 28 ÷ 4 ?
a. 4 x __ = 28
b. 4 + __ = 28
c. 4 x 28 = __
d. 4 + 28 = __
a. 4 x __ = 28
Ben weighed a bag of potatoes. Which unit of measurement would be best to use for weighing a bag of potatoes?
a. liter
b. milliliter
c. meter
d. kilogram
d. kilogram
Sam had to write an equation to solve the following problem:
Ellen had 32 ounces of milk to split among her 4 children. She poured an equal amount into each glass. How many ounces did each child receive?
Sam wrote: 32 ÷ 4 = n What does the n represent?
n represents the ounces of milk each child receives.
A garden has a length of 3 feet and a width of 6 feet. What is the area of the garden?
Area = length x width
Area = 3 x 6
Area = 18 sq. ft.
Which two shaded fractions are equivalent (teacher show image)
2/8 is equivalent to 1/4
Alex sorted 20 toy cards into 4 groups with the same number of cars in each group. Which expression represents the number of toy cards in each group?
a. 20 x 4
b. 20 + 4
c. 20 ÷ 4
d. 20 - 4
c. 20 ÷ 4
616 - 229 =
387
Pablo puts a total of 28 books on 7 shelves. He puts the same number of books on each shelf. Write a division equation that represents the number of books Pablo puts on each shelf. Use a letter to represent the unknown.
28 ÷ n = 7
True or false:
It is okay to have gaps and overlaps when using tiles to measure area.
false
Which fraction goes in the blank to make the number sentence true?
4/8 > ?
a. 4/6
b. 2/8
c. 7/8
d. 4/4
b. 2/8
Sari had 60 pieces of candy to divide into 10 bags for her friends. She had to figure out how many pieces to put into each bag. Her mom said she could use the equation 10 x __ = 60. Sari said she thought of it as 60 ÷ 10 = __. Who is correct, Sari, her mom, or both? Explain how you know your answer is correct.
Both are correct.
10 x 6 = 60 and 60 ÷ 10 = 6. Multiplication and division are related.
There were 345 students who attended the play. What is 345 rounded to the nearest 100? Model your thinking using a number line.
300
Place parenthesis in the equations to simplify and complete the problems. Be sure the first two equations both have parenthesis.
3 x 30 = 3 x 3 x 10
= 3 x 3 x 10
= ___ x 10
= ___
3 x 30 = 3 x (3 x 10)
= (3 x 3) x 10
= 9 x 10
= 90
Paul has gray and white paving stones in his patio. A diagram is shown (teacher show the diagram).
Which equation can be used to find the total area, in square feet, of Paul's patio?
( __ x __ ) + ( __ x __ )
(8 x 7) + (8 x 3)
Four children were sharing a pack of gum that had 8 pieces in it. Brynn had 1 piece, Tyler had 2 pieces, and Harper had 4 pieces of gum. Grace ate the rest of the gum. What fractional part of the gum did Grace eat?
1/8
Jerome had 23 farm animal stickers and 17 sea animal stickers. Jerome used all of the stickers to fill an 8 page scrapbook. He put the same number of stickers on each page. How many stickers did he put on each page?
23 + 17 = 40
40 ÷ 8 = 5
Jerome put 5 stickers on each page.
904 - 643 =
AND
379 + 28 =
904 - 643 = 261
379 + 28 = 407
Brad recycles 40 cans and 30 bottles. He gets 5 cents for each can or bottle he recycles. What is the total number of cents Brad gets for recycling his cans and bottles?
40 cans + 30 bottles = 70 total recyclables
70 x 5 = 350
How many square units will it take to cover the shape below? (teacher show image)
4 x 6 = 24 square units
Draw a number line that shows the interval 0 - 1 and partition it into sixths. Then plot the halfway point.
Teacher check on for accuracy on student whiteboards.
Mrs. Allen's class has 18 students who sit in rows on the carpet for story time. Josh says, "we make 3 rows of students." Lana says, "we make 6 rows of students." Who is correct? Show how you know using models, numbers, and/or words.
Both Josh and Lana are correct.
18 can be divided into 3 rows with 6 students in each row. 18 can also be divided into 6 rows with 3 students in each row.
18 ÷ 3 = 6 and 18 ÷ 6 =3
Mr. Tom uses 36 gallons of gas every week. Round to the nearest ten gallons using a number line to estimate about how many gallons he uses every week.
Use your estimate to find about how many gallons Mr. Tom uses every month (Each month has 4 weeks).
Mr. Tom uses about 40 gallons of gas every week.
40 x 4 = about 160 gallons every month
Adam collects 125 sea shells. He gave 61 shells to his little brother. Adam then takes the remaining shells and divides them equally into 8 boxes. How many shells go into each box?
125 - 61 = 64 shells
64 ÷ 8 = 8 boxes
Find the area of the shape. (teacher show image)
2 x 4 = 8
2 x 4 = 8
2 x 2 = 4
8 + 8 + 4 = 20 square centimeters
Jerry has a fruit roll that is 4 feet long. Jerry cut each foot into halves. Draw a number line with the intervals 0 - 4. Show on the number line how Jerry cuts his fruit roll into pieces 1/2 foot each in length.
Teacher check for accuracy on whiteboards.