Estimating Sums & Differences

Last updated almost 2 years ago

14 questions

Round & Estimate

5.3.A

Estimate, Then Compare

5.3.K

Estimating Sums & Differences

Last updated almost 2 years ago

14 questions

Round & Estimate

Round the numbers to the leading digit.  Estimate the sum or difference.

   3,576  →    4,000                                               198,248  →    200,000
+ 1,307  →  +1,000                                           − 116,431  → − 100,000
is about →    5,000                                             is about   →    100,000

Round the numbers to the leading digit.  Estimate the sum or difference.

   675  →  __________
+ 489  →  __________
is about  →  __________

5.3.A

Round the numbers to the leading digit.  Estimate the sum or difference.

    21,481  →  __________
− 12,500  →  __________
is about  →  __________

5.3.A

Round the numbers to the leading digit.  Estimate the sum or difference.

   7,834  →  __________
+ 3,106  →  __________
is about  →  __________

5.3.A

Round the numbers to the leading digit.  Estimate the sum or difference.

   682,778  →  __________
+ 130,001  →  __________
  is about  →  __________

5.3.A

Round the numbers to the leading digit.  Estimate the sum or difference.

    58,499  →  __________
− 22,135  →  __________
is about  →  __________

5.3.A

Round the numbers to the leading digit.  Estimate the sum or difference.

    902,279  →  __________
−  615,999  →  __________
is about    →   __________

5.3.A

Round the numbers to the leading digit.  Estimate the sum or difference.

    46,801  →  _______ 
+  34,700  →  _______ 
is about  →   _______ 

5.3.A

Round the numbers to the leading digit.  Estimate the sum or difference.

    9,734  →  _______ 
−  8,306  →  _______ 
is about →  _______ 

5.3.A

Round the numbers to the leading digit.  Estimate the sum or difference.

    65,606  →  _______ 
+  85,943  →  _______ 
is about  →   _______ 

5.3.A

Round the numbers to the leading digit.  Estimate the sum or difference.

    5,218  →  _______ 
−  3,673  →  _______ 
is about →  _______ 

5.3.A

Round the numbers to the leading digit.  Estimate the sum or difference.

        745  →  _______ 
    +  451  →  _______ 
is about  →   _______ 

5.3.A

Round the numbers to the leading digit.  Estimate the sum or difference.

    337,297  →  _______ 
−  168,931  →  _______ 
  is about   →  _______ 

5.3.A

Estimate, Then Compare

Write < or > for each problem.

329 + 495 __________ 800

11,569 − 6,146 __________ 6,000

563 − 317 __________ 300

8,193 − 6,668 __________ 1,000

5.3.K

Write < or > for each problem.

41,924 − 12,445 __________ 50,000

634,577 + 192,556 __________ 800,000

18,885 + 12,691 __________ 30,000

713,096 − 321,667 __________ 400,000

5.3.K