Misc.
Question 1: Write 2 multiplication and 2 division equations ( a fact family) to describe this array.
5 x 4 = 20
4 x 5 = 20
20 ÷ 5 = 4
20 ÷ 4 = 5
3 x 8 = (2 x 8) + (1 x 3)
False
Question 11: Label each rectangle with its dimensions and area. Then write a multiplication equation to show how you found the area of the rectangle.
24 square units
8 x 3 = 24John said he could solve 6 X 6 by multiplying
(5 X 6 ) + (5 X 1). What error did John make in his thinking?
John made an error because he did not break apart 6 × 6 correctly.
He wrote (5 × 6) + (5 × 1), but that does not represent 6 groups of 6.
To split 6 × 6 correctly, one factor should stay the same in both parts, like:
(5 × 6) + (1 × 6)
Question 2: Write 2 multiplication and 2 division equations (a fact family) to describe this array.
6 x 4 = 24
4 x 6 = 24
24 ÷ 6 = 4
24 ÷ 4 = 6
(2 x 3) x 4 = 2 x (3 x 4)
True
Do the chicken dance
You earned 200 points with those moves!
Jamie has to solve this story problem:
There are 32 fourth graders in the gym. The gym teacher divides them into 4 equal groups. How many fourth graders in each group?
Jamie says she can solve the problem by thinking, “4 times what number equals 32?” Do you agree with Jamie? Why or why not?
Yes, I agree with Jamie.
Her thinking is correct because dividing 32 students into 4 equal groups is the same as asking a multiplication question:
4 × what number = 32?
That works because multiplication and division are opposite ways to work with numbers.
4 x 8 = 32 is the same as 32 ÷ 4 = 8
32 ÷ 4 = 8
Questions 3 & 4: Fill in the missing numbers in the multiplication table.
4, 9, 8
30
Make a silly noise
You get 300 points!
Question 12: Write an equation to find the area of this rectangle.
9 x 6 = 54
54 square units
Sue has 44 cookies. She put 8 cookies in a basket. She put the rest of the cookies into 6 boxes with the same number of cookies in each box. How many cookies were in each box?
44 − 8 = 36
36 ÷ 6 = 6
There are 6 cookies in each box.
Question 5:
15 ÷ _____= 5 24 = 4 X _____ 18 = ____ x 6
4 = ____ ÷ 5 2 X 4 X 3 =______ 7 = 14 ÷ _____
15 ÷ 3= 5 24 = 4 X 6 18 = 3 x 6
4 = 20 ÷ 5 2 X 4 X 3 = 24 7 = 14 ÷ 2
(5 x 4) x 2 = 5 x (4 x 2)
True
Question 13: Jim is building a swimming pool. The plan is below. Use the plan to find the area of the pool. Show your work.
30 square units
Four friends are making paper airplanes. They have made 24 airplanes so far. Then they each made 3 more airplanes. How many do they have now?
4 × 3 = 12
24 + 12 = 36
They have 36 airplanes.
3 X 60 = _____ 40 X 5 = ______ 3 x 80 = ______
3 × 60 = 180
40 × 5 = 200
3 × 80 = 240
4 x 7 = (2 x 7) + (3 x 7)
False
Cleo made a map of her back yard. Use her map to find the area of her back yard. Show your work.
92 square yards
The pet store got 4 boxes of new dog collars. There were 6 dog collars in each box. Pam unpacked all the collars and hung them up in 3 equal rows on the wall. How many collars in each row?
(4 × 6) ÷ 3 = c
First, we find the total number of collars:
4 × 6 = 24
Then we split them into 3 equal rows:
24 ÷ 3 = c