Problems with Zeros
Find the product of 6 x 90
540
Estimate 6,719 x 4 using rounding.
7,000 x 4=28,000
Jen says that 6 times as many as 13 is the same as
13 times as many as 6. Is Jen correct? Explain your
reasoning.
Yes; 6 x 13 = 13 x 6 by the Commutative Property
of Multiplication.
Sylvia plants 11 trees. Hannah plants 3 times as many trees as Sylvia. How many trees do they plant in total?
11 + 3 x 11 = 44
44 trees
Find the Product of 7 x 500
3,500
Estimate 6,719 x 4 using front-end estimation.
6, 0 0 0 x 4= 2 4, 0 0 0
Find the product and name the property
of multiplication that you used.
1 x 11 =
Property:
11; Identity Property
An auditorium has 9 rows of 13 seats.
Write a multiplication expression that represents the
total number of seats.
9 x 13
Find the product.
6 x 2,000
12,000
Mr. Livingston needs to bring enough money to the store to buy 3 stools. Each stool costs $68. Should Mr. Livingston use front-end estimation or rounding to estimate the total cost of the stools?
rounding=$210
Find the product and name the property
of multiplication that you used.
0 x 7 =
Property:
0; Zero Property
Which statements are true about the number 48?
Select all that apply.
a. 48 is 6 times as many as 8.
b. 48 is 4 times as many as 16.
c. 48 is 8 times as many as 6.
d. 48 is 16 times as many as 3.
e. 48 is 7 times as many as 8.
a,c,d
How many zeros are in the product
of 8 and 5,000?
40,000
4 zeros
Mr. Milley is buying 8 computers for his classroom. The computers cost $529 each. Round to the nearest hundred to estimate the total cost of the computers.
4,000
An auditorium has 9 rows of 13 seats.
Use the Distributive Property to find the total number
of seats.
9 x (10 + 3) = (9 x 10) + (9 x 3)
= 90 + 27
= 117
Explain how to use a place-value model to find the
product 6 x 39.
6 groups of 39
18 tens and 54 ones
regroup the 54 ones into 5 tens and 4 ones
18 tens and 5 tens and 4 ones = 23 tens 4 ones
234
Carrie is acting in a play that runs for three nights. The theater holds 500 people. If the play sells out every night, how many tickets are sold in total? Write a multiplication equation to justify your answer.
3 x 500= 1,500
Use front-end estimation to
estimate the product.
437 x 7
about _____
2,800
Fill in the blanks to find the
products using the Associative
Property of Multiplication.
(4 x 2) x 1 = 4 x (_____x1)
____x_____= 4x ______
_______ x________
(4x2) x 1=4 x ( 2 x 1)
8x1=4x2Use the place-value model
to find the product 4 x 14.
56