Name: ___________________

Date:___________________

kwizNET Subscribers, please login to turn off the Ads!
Email us to get an instant 20% discount on highly effective K-12 Math & English kwizNET Programs!

Grade 4 - Mathematics
9.11 Estimation: Addition and Subtraction

  1. Approximate the given numbers.
  2. Add or subtract after approximation.
Example: 19,034 + 93
19,034 can be approximated to 19,000
93 can be approximated to 90
19,000 + 90
Answer: 19,090

Example: 4,230 - 167
4,230 can be approximated to 200,000,000
167 can be approximated to 200
200,000,000 - 200
Answer: 199,999,800


Directions: Find the approximate answer using estimation (round up or down before doing the calculation).
Q 1: 4,328 + 7,221 = ________
12,000
11,000
10,000
13,000

Q 2: 37,328 - 649 = _____
36,000
30,000
38,000
37,300

Q 3: 37,291,510 + 12,999,999 = ________
49,000,000
30,000,000
50,000,000
60,000,000

Q 4: 11,341,280 + 978 = ________
12,000,000
10,001,000
11,000,000
10,900,000

Q 5: 17,681 + 66 = _____
18,000
18,100
20,070
17,000

Q 6: 13,590 - 7,821 = _____
8,000
20,000
13,000
6,000

Q 7: 4,328 + 7,221 = ________
13,000
9,000
11,000
10,000

Q 8: 9,321 + 491 = _____
13,000
11,000
9,000
12,000

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


Subscription to kwizNET Learning System costs less than $1 per month & offers the following benefits:

  • Unrestricted access to grade appropriate lessons, quizzes, & printable worksheets
  • Instant scoring of online quizzes
  • Progress tracking and award certificates to keep your student motivated
  • Unlimited practice with auto-generated 'WIZ MATH' quizzes
  • Child-friendly website with no advertisements


© 2003-2007 kwizNET Learning System LLC. All rights reserved. This material may not be reproduced, displayed, modified or distributed without the express prior written permission of the copyright holder. For permission, contact info@kwizNET.com
For unlimited printable worksheets & more, go to http://www.kwizNET.com.