Estimation
August 31, 2016
Round to the Nearest Ten,
Hundred, or Thousand to Estimate
Products.
Estimation
August 31, 2016
Whole Number Multiplication and Division
machine can produce 212 bottle caps in 1 minute. Estimate the number of
2.2 Multiplying by Tens, Hundreds, orAThousands
bottle caps it can produce in three-quarters of an hour, working non-stop.
Estimate products to solve word problems.
Objective
Estimate produc
Directions
Three-quarters of an hour
minutes.
als 60
reehour
utes.
7/8
•
Tap Word P
class. Guid
know the n
hour to get
write the nu
•
Ask studen
problem. (R
student to w
the boxes a
x 200)
•
Discuss wit
use to mult
first digits a
Break apar
come to the
would use.(
•
Tap Show A
Estimation
August 31, 2016
Whole Number Multiplication and Division
machine can produce 212 bottle caps in 1 minute. Estimate the number of
2.2 Multiplying by Tens, Hundreds, orAThousands
bottle caps it can produce in three-quarters of an hour, working non-stop.
Estimate products to solve word problems.
Objective
Three-quarters of an hour
212
45
200
50
45
45
minutes.
10,000
als 60
reehour
utes.
SA2
Estimate pro
Directions
•
Discuss
•
Tap Bac
Estimation
August 31, 2016
Estimate the product of 632 and 26.
Step 1: Round 632 to the nearest hundred.
Step 2: Round 26 to the nearest ten.
Step 3: Multiply the rounded numbers. The
product is the estimate.
Estimation
August 31, 2016
Estimate the product of 228 and 57.
Step 1: Round 228 to the nearest hundred.
Step 2: Round 57 to the nearest ten.
Step 3: Multiply the rounded numbers. The
product is the estimate.
Estimation
Estimate.
1. 702 x 15 =
2. 38 x 246 =
3. 851 x 19 =
August 31, 2016
Estimation
August 31, 2016
Estimate by rounding the the nearest ten
or thousand.
A museum gift shop sold 1,215 sets of
dinosaur models. There were 26 dinosaur
models in each set. Estimate the total
number of dinosaur models the shop sold.
Estimation
August 31, 2016
Journal:
Multiply the following problem. Explain how
you can check if your answer is reasonable.
187 x 97
Estimation
Workbook p. 35
August 31, 2016
Estimation
August 31, 2016