Vocabulary
To estimate a solution, you can _________ the values used before performing operations.
What number is 105?
100,000
356 x 4
1,424
Mr. Henshaw ate 7 candy bars a day for 38 days. How many candy bars did he eat?
266 candy bars
Mason drove 81.23 miles before lunch and 49.49 miles after lunch.
Round each number to the nearest whole number to estimate of the total number of miles Mason drove.
Mason drove about 130 miles.
A ____ is as approximate solution to a problem.
Estimate
What number is 106?
1,000,000
555 x 43
23, 865
A rectangular field measures 416 feet long and 52 feet wide. About how much is the area of the field?
About 20,000 feet
4.23 + 1.6 =
5.83
A _____ is a set of steps used to solve a problem.
Algorithm
What number is 107?
10,000,000
935 x 14
13, 090
A bus company charges $83 for a ride from one city to another. During the last trip, the bus had 42 fares. How much money did the bus company earn?
$3,486
.31 - .07=
.24
The ____ of a number written in exponential form tells you how many times the base is multiplied by itself.
Exponent
What number is 1010?
10,000,000,000
1, 267 x 21
26, 607
In its frame, a rectangular poster measures 68 inches long and 45 inches wide. How much wall space does the poster cover? Explain the strategy you used to find the answer.
3,060 inches
5.70 - 2.08
A _____ is written in exponential form using 10 as the base and the number of times 10 is multiplied by itself as the power, or exponent.
Power of 10
What number is 1015?
1,000,000,000,000,000
3,467 x 92
The average attendance at a town’s high school soccer games is 4,153 people per game. How many people attended the team’s 8 home games this season? Give an estimate and the exact number. Explain your strategies.
Estimate: 40,000 people
Exact: 33,224
What is the value of the 8 in the number 128,944?
The 8 is in the thousands place so it is worth 8,000.