Multiply by Multiples 10, 100 & 1,000
3 x 70=
210
6 x 112=
About 600
Use Distributive to solve (box method)
5 x 921=
(5 x900) + (5x20) + (5x1) =
4,500 + 100 + 5 = 4,601
Solve using Partial Products
227 x 3 =
(rewrite it)
681
Type of Muffin Number of Orders (boxes)
Blueberry 53
Corn 76
Coffee Crumb 30
Raspberry 18
Calton Bakery sells a variety of muffins. There are 8 muffins in each box. How many blueberry muffins were ordered.
6 x 400=
2,400
4 x 2,610=
About 12,000
Use Distributive to solve (box method)
4 x 352=
(4 x 300) + (4 x 50) + (4 x 2) =
1,200 + 200 + 8 = 1,408
Solve using partial products
4,826 x 6 =
28,956
A parking garage has 8 levels.
Each level has space for 78 cars. How many cars can park in the garage at one time?
8 x 6,000=
48,000
5 x 1,240 = 9,200
Is this reasonable?
Round 1,240 to ______.
5 x _____= _______.
5 x 1,000= 5,000
9,200 is not reasonable.
Use Distributive Property to solve
4 x 1,554 = _________
6,216
use partial products to solve
2,459 x 7 =
17,213
Mrs. Wallford is selling boxes of baseball cards in boxes of 30 and in boxes of 60. If she sells 5 boxes of 30, and 3 boxes of 60, how many baseball cards did she sell?
330 trading cards
7,000 x 4=
28,000
Elle estimates the product of 211 and 6 is 1,800. Is this estimate reasonable? Explain.
No.
211 should be rounded to 200 and then multiplied by 6 to get 1,200.
200 x 6= 1,200
A lodge at a state park has 49 rooms. Up to 5 people can stay in each room. What is the maximum number of people who can at stay the lodge at one time?
______ toes?
245 people
Tommy spent $259 on 4 computers each. Use partial products to find out how much money Tommy spent in total.
$1,036
Maureen's team did a fund raiser to earn money for new uniforms. They raised $480. Maureen's team bought 9 uniforms that cost $45. How much money did they have left over?
$75
Jenna saved $100. She wants to buy 6 games that cost $20. Does she have enough money? Explain.
No, she needs 20 more dollars.
A city recycles 7,610 pounds of paper in one year. If they recycle the same amount each year, about how many pounds of paper will they recycle in 7 years?
56,000 pounds
The animal shelter charges $119 to adopt a pet. On Saturday 7 dogs and 2 cats were adopted. How much money did the animal shelter receive from these adoptions?
$1071
A grocery store orders 47 bags of onions and 162 bags of potatoes. The onions cost $2 per bag and the potatoes cost $3 per bag. How much money was spent on the onions and potatoes?
$580
At the math club ceremony, there were 17 tables with 9 people at each table. Each person received 2 certificates. How many certificates were distributed at the ceremony?
306 certificates