Practice Exercises for Adding and Subtracting Decimals

Directions: Read each question below. Select your answer by clicking on its button. Feedback to your answer is provided in the RESULTS BOX. If you make a mistake, choose a different button.

1. 4_and239thousandths.gif
      0.04239
      0.4239
      4.239
      42.39

      RESULTS BOX:
          
2. Which of the following decimals represents nine hundred sixty-four and fifty-one hundredths?
 
      964.5
      964.51
      964.051
      None of the above

      RESULTS BOX:
          
3. Which of the following is equal to 8.0200?
 
      eight and two hundred thousandths
      eight and two hundred-thousandths
      eight and two hundred ten thousandths
      eight and two hundred ten-thousandths

      RESULTS BOX:
          
4. Which of the following choices lists these decimals in order from least to greatest:  1.86, 1.75, 1.8?
 
      1.86, 1.8, 1.75
      1.75, 1.8, 1.86
      1.75, 1.86, 1.8
      None of the above.

      RESULTS BOX:
          
5. Which of the following choices lists these decimals in order from least to greatest:  36.021, 35.2, 35.201, 35.102?
 
      35.102, 35.2, 35.201, 36.021
      35.102, 35.201, 35.2, 36.021
      36.021, 35.201, 35.2, 35.102
      None of the above.

      RESULTS BOX:
          
6. Which of the following is a reasonable estimate for the sum of 6.753 and 1.24?
 
      80
      79.9
      8
      All of the above.

      RESULTS BOX:
          
7. What is the sum of 128.964 cm and 72.09 cm?
 
      200.954 cm
      201.054 cm
      2010.54 cm
      None of the above.

      RESULTS BOX:
          
8. Which of the following is the sum of these numbers:  3.624 + 17.1583 + 12.09?
 
      32.9823
      3.29823
      32.8723
      None of the above.

      RESULTS BOX:
          
9. Which of the following is a reasonable estimate for difference of 6.871 and 2.15?
 
      5
      6.6
      66
      All of the above.

      RESULTS BOX:
          
10. Which of the following is the correct difference when you subtract these decimals:  $23.00 – $6.05?
 
      $17.05
      $16.05
      $16.95
      None of the above.

      RESULTS BOX: