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 1 - Mathematics
3.23 Addition - 3 Digits

Addition without carryover
  1. Start from the ones place
  2. Add the numbers in the ones place.
  3. Add the numbers in the tens place.
  4. Add the numbers in the hundreds plce.
Question Step 1 Step 2 Step 3
Addition with carryover
  1. Start from the ones place, add the numbers in that place.
    If the sum is one digit, place in the units place.
    If the sum is two digits, place right number in the units place and left number as carryover.
  2. Add the numbers in the tens place (also add carryover if any)
    If the sum is one digit, place in the units place.
    If the sum is two digits, place right number in the units place and left number as carryover.
  3. Add the numbers in the hundreds place (also add carryover if any)
    If the sum is one digit, place in the units place.
    If the sum is two digits, place right number in the units place and left number as carryover.

Question Step 1 Step 2 Step 3
Add units digits Add tens digits and carryover Add hundreds digits
9+8=17 1+1+1=3 8+3=11
  • Start from the ones digit, add the numbers in that place, then move on to the tens and to the hundreds.
  • Here we get 9+8 = 17, since it a 2 digit number we write 7 under ones place and take 1 as carry over in the tens place.
  • Hence in tens place we have 1+1+1 = 3, since it is a 1 digit number, write 3 under the tens place.
  • In hundreds place we get, 8+3 = 11
Answer: 1137
Directions: Find the sum of the 3 digit numbers. Also write at least ten examples of your own.
Question 1: 448
+ 211
Answer:

Question 2: 240
+ 633
Answer:

Question 3: 271
+ 643
Answer:

Question 4: 65
+ 705
Answer:

Question 5: 751
+ 210
Answer:

Question 6: This question is available to subscribers only!

Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!

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.