Adding and Subtracting Fluency

Estimate the sum.

16.9 + 8.3 ≈ __

• 25

• 26

• 24

• 20

What is the best estimate for the difference of 
33 - 10.23

• 10

• 200

• 23

• 9

Estimate to the nearest PLACE VALUE and solve:

(a)  

What is a reasonable estimate of the sum of 2.25 and 1.23?

• 7

• 0.5

• 3

• 16.00

Wesley estimated 5.82 - 4.21 to be about 2. Is this an overestimate or an underestimate?

• overestimate

• underestimate

Estimate the difference.

12.99 - 5.95 =

• 7

• 10

• 20

• 19

What is the focus skill for your child this school year in math? 

• Telling time (3rd) 
  Measuring (2nd) 

• Adding and subtracting within 100 (2nd) 
  Multiplying and dividing with 100 (3rd) 

• Area and perimeter (3rd) 
  Multiplication and division (2nd) 

• Telling time (2nd) 
  Measuring (3rd) 

What is the first step when adding and subtracting decimals?

• Line up the numbers

• Line up the decimals

• Add or subtract like normal

• Add in placeholders

7.9 - 3.47 =

• 11.37

• 4.43

• 3.32

• 4.37

Abby buys a game for $7.89 and batteries for $5.49.  She pays with a twenty dollar bill, how much change will she receive? 

• 7.72

• 33.38

• 13.38

• 6.62