Multiply Greater numbers by Powers of 10
How many zeros are in the product 30 × 105 ?
6 zeros
Which is the best estimate of 26 × 604?
15,000
Find the product of 9 and 583.
5,247
18 × 42
756
The school band has 115 members. They are raising money for band camp. If each member raises $75, what is the total amount of money raised for band camp?
$8,625
What is the product 70 × 104 ?
700,000
Estimate the product 306 × 673 by first rounding each number to the nearest hundred.
210,000
The height of one mountain is 199 yards. Another mountain is 6 times as tall. What is the height of the second mountain?
1,194 yards
using partial products ---
43 × 17?
731
75 × 222
16,650
Which equals 19 × 1,000,000?
19,000,000
A daycare charges $195 per week for each child that attends. There are 51 children that attend each week. What is the best estimate for the total amount of money the daycare receives each week?
$10,000
954 x 7
6,678
16 x 17
272
768 x 23
17,664
Ava earns $3,000 in 1 month at her job. How much will Ava earn in 20 months? Use the drop-down boxes to show how to solve the problem.
$60,000 in 20 months
3,000 x 20
At the beginning of the season, a golf coach buys 118 sleeves of golf balls. Each sleeve costs $8. Which best explains if it is better to overestimate or underestimate the amount of money the coach needs to buy the golf balls?
It is better to overestimate to make sure the coach has enough money to buy the golf balls.
653 x 4
2,612
The Hoffman family has bought one pizza on Friday night every week for the last 10 years. How many pizzas have they bought on Friday nights?
520 pizzas
A sporting goods store sells tennis balls in boxes. Each box has 4 sleeves of tennis balls. Each sleeve has 3 tennis balls. The store sold 67 boxes on Saturday and 46 boxes on Sunday. How many tennis balls did the store sell in all?
1,356 tennis balls
Which is equivalent to multiplying a number by 103?
Multiplying by 1,000
A cleaning service orders 7 large bottles and 14 small bottles of a cleaning product. Each large bottle has 124 ounces. Each small bottle has 64 ounces. Which is the closest estimate of the total amount of cleaning product the cleaning service orders?
1,800 ounces
According to the _________ Property of multiplication, (3 x 4) x 5 = 3 x (4 x 5).
Associative
Mr. Wong wants to purchase 12 new smoke detectors for his house. Store A sells each smoke detector for $17 and Store B sells each smoke detector for $24. If Mr. Wong purchases all his smoke detectors at Store A, how much less will he spend than if he purchased all the smoke detectors at Store B?
$84
Mr. Lyons is laying tile for the rectangular floor of a hotel lobby. The floor will be 38 tiles wide and 112 tiles long. He has a total of 4,400 tiles. Which explains whether or not he has enough tiles for the entire floor?
Yes, he has enough tiles. He needs only 4,256 tiles and will have 144 left over.