Download Estimation Study Guide

Alternate Math 1
Estimation Test Study Guide
Name:_________________
Non-Calculator: Estimating with Nice Numbers
Locate in your notebook:

Estimating with Nice
Numbers sheet 4


Estimating with Nice
Numbers sheet 5
Estimating Using Nice
Numbers Mini-Quiz
1. What were the nice numbers that you used on these activities?
2. What do you do to multiply by 10?
3. What do you do to multiply by 1,000?
4. What do you do to divide by 100?
5. What do you do to divide by 10,000?
6. In the new expression, what does the “-” mean?
Original: 392  99.84 New Expression: 392  100  39,200 
7. Write a new expression, the quick estimate, and the adjusted estimate.
New Expression
Quick Estimate
Adjusted Estimate
 15.2  9.98

152  100.13
Non-Calculator: Estimating with “Nice” Fractions
Locate in your notebook:


Fractions Can be “Nice” Numbers sheet 1
Using Nice Numbers to Estimate Sums sheet 2
1. How can you tell when a
fraction is close to 1?


Communicating with Nice Fractions sheet 3
Estimating with Nice Numbers sheet 4 (on the back
of sheet 3)
2. How can you tell when a
fraction is close to 21 ?
4. Estimate the sum:
12
 91
 13

3. How can you tell when a
fraction is close to 0?
2 54  3 101  14
15
5. Write down 4 fractions are considered to be “nice” fractions?
6. Represent the following situations with a nice fraction.
 Michaela made 9 baskets out of 35 shots
7.

Kevin made 11 putts out of 16
Estimate each answer by using a nice number that is easy to divide.
 31 of $27.85
 61 of $35.49

How much would you save if you bought a $31.38 sweater that was
3
4
off?
Non-Calculator: Using Compatible Numbers
Locate:
 Using Compatible Numbers sheet 1
 Compatible Numbers with Fractions and Percentages sheet 2
1. What was the strategy for these types of problems?
2. Estimate by choosing compatible numbers. Write your new expression and your estimate.
New Expression
Estimate
 82  9.1

3590  68

4100  810
Calculator: Calculators and Estimation
Locate:
 Calculators and Estimation sheet 1
 Calculators and Estimation sheet 2
 Calculators and Estimation sheet 3
1. Find the second factor so that your product or quotient falls in the given range.
Start
Range
Number of Tries

21 _____
(1800, 1900)
_____________

50  _____
(20, 23)
_____________

400  _____
(20, 30)
_____________

9  ____
(110, 130)
_____________
2. What does the word successive mean?
3. Use a start number and successive multiplication or division to obtain a product in the given range.
Record each product in the spaces provided.
Start
62 x ____
Range
(7000, 7010)
__________ __________ __________ __________ __________ __________ ________
1015 ÷ ____
(10, 20)
__________ __________ __________ __________ __________ __________ _________
# of steps