Place Value
Estimation
Operations with Fractions
Operations with Decimals
100
What is the value of the 5 in 


425,023.1?

5 thousands
100
What is .4291 rounded to the nearest tenth?
.4
100
1/3 + 2/4 
1/3 + 2/4 is 4/12 + 6/12 = 10/12 or 5/6
100
Where does the decimal point go in 


.12 x .4 =

.048
200
Which number is 1/10 the size of the 2 in 491.23


A) 492.13

B) 143.42

C) 324

B) 143.42
200
What is .3581 rounded to the nearest hundredth?
.36
200
3 1/2 - 1 1/4 
2 1/4
200
Jackson get's paid $10.30 an hour. How much will he make if he works 4 hours today? 
10.30 x 4  = 41.20
300
Write a number that is exactly 1/10 the size of 30.12
3.012
300
Marion wants to estimate how much she has run so far.

On Monday she ran 1 1/4 miles. On Tuesday she ran 2 3/4 miles. About how much did she run? 


A) 3 miles 

B) 4 miles 

C) 5 miles 

B) 4 miles
300
Paul has a wooden board that is 5 meters long. If he cuts the board into pieces that are 1/4 meters long, how many pieces will he have?
20
300
Mia and Lisa run 6.3 miles. If Mia runs 2.45 miles, how much did Lisa run?
6.30 - 2.45 = 3.85


Lisa ran 3. 85 miles

400
Write a number that is 1/10 the size of 


(4 x 1,000) + (2 x 100) + (3 x 1) + (5 x 1/10)

number in standard algorithm: 4,203.5


Answer: 420.35

400
Kiara wanted to estimate how much of the trail she's completed. 


Monday: 23/50

Tuesday: 7/32 


What equation should she use to estimate how much she's  completed? About how much has she completed?

Equation: 1/2 + 1/4 


2/4 + 1/4 = 3/4

She completed about 3/4 

400
Lisa studied for 4 1/2 hours and John studied for 2 4/5 hours. What's the difference in hours studied? 
4 1/2 - 2 4/5 


4 5/10 - 2 8/10 

3 15/10 - 2 8/10 

1 7/10

400
A mom has $50.24 to give to her four kids for Christmas shopping. Each kid gets the same amount. If Jordan combines her 20.40 from babysitting with her money from mom, how much money does she have for Christmas shopping?
12.56 + 20.40 = 32.96


500
Write a number that is 1/100 of the number 


(2 x 10) + (4 x .1) + (3 x .01)

20.43 


.2043

500
Evaluate Jackson's estimation below. If he's correct, say why. If not, create an equation that is correct


4/31 is about 1/6, 5/39 is about 1/6, and 6/25 is about 1/3


1/6 + 1/6 + 1/3 = 2/3 of the hike so far 

(Jackson used mental math to add with a common denominator)

No! it's wrong. 


4/31 (which is close to 4/32) is closer to 1/8, 5/39 (close to 5/40) is closer to 1/8, and 6/25 (closer to 5/25) is 1/5 


1/8 + 1/8 + 1/5 

5/40 + 5/40 + 8/40 = 18/40 which is about 1/2

500
Jasmine runs 3 miles. Moriah runs 1/4 as much as Jasmine. Draymond runs 1 2/3 as much as Moriah. how much did Draymond run?
find Moriah's amount: 

3 x 1/4 = 3/4 miles 

Find Draymond: 

3/4 x 1 2/3


5/3 x 3/4 = 15/12 

1 3/12 or 1 1/4 


500
Domiyo has $20. 


He wants to buy:

- 4 bottles of soda for $2.20 each

- 2 bags of Takis for $1.50

- 4 packages of hersey's chocolate for .75 each

Does he have enough money? If yes, how much money will he have left over, if no how much more does he need?


Soda: 4 x 2.20 = 8.80


Takis: 1.50 

Chocolate: .75 x 4 = 3 


3 + 8.80 + 1.50 = 13.30 

20- 13.30 = 6.70


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