estimating decimals
Using Models to add or subtract Decimals
adding decimals
Subtracting decimals
Mr. Denelsbeck Facts
100

round this to the nearest whole number: 

12.8

13

100

what is the correct expression for this model

0.32 + 0.17

100

0.5+0.7

1.2


100

0.8-0.26

0.54

100

What is Mr. Denelsbeck's favorite Baseball team? 

Phillies


200

Round this to the nearest hundredth:

3.568

3.57

200

What is the correct decimal for the model shown: 

1.83

200

2.56+8.2

10.76

200

56.83 - 0.9

55.93

200

What energy drink does Mr. Denelsbeck drink each morning? 

Monster

300

what is the estimated value: use rounding the nearest whole number: 


65.3 + 89.45=

65+89=154


300

what is the correct expression for this model

0.27 - 0.09

300

Jonathan Taylor ran the 40-yard Dash in 4.42 seconds on his first trial and rain 4.49 on his second trial.


What is his total time if you combine both trials? 

8.91

300

the price of one share of a compan at the end of the day Monday was $126.38. The price share decreased $7.95 the next day. What was the price of the share at the end of the day Tuesday? 

118.43

300

How many Niece and or Nephew's does Mr. Denelsbeck have  

1 Nephew

400

Use compatible numbers:


748.2 + 238.45


DAILY DOUBLE!!!

750+250=1,000

400

Create a model that represents this expression and solve (what is the sum) 


0.64 + 0.58=

1.22

400

1,458.3 + 2.568

1,460.868

400

Jonathan Taylor ran the 40-yard Dash in 4.42 seconds on his first trial and rain 4.49 on his second trial. How much faster was his first trial compared to his second trial? 

0.07 seconds

400

Mr. Denelsbeck has a second job. What does he do? 

Server / Waiter
500

Use compatible Numbers: 

*Think what is the most accurate / easiest way to estimate this! Hint keep them both as decimals.

2.51+2.48

2.5+2.5=5

500

Create a model that represents this expression and then find the difference.


1.25 - 0.29=?

0.96

500

What is the perimeter of a square with a side length of 2.56cm? 

10.24 cm

500

Mr. Denelsbeck Pays the cashier with a $50 bill. He buys 2 glue sticks at $0.98 , a note book for $2.49, Scissors for $1.50, and a bag of dorito's for $4.79. How much Change should I get back?  

$39.26

500

What are the three things that annoys Mr. Denelsbeck the most? 

Closet's opened

chairs not pushed in

Not following directions

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