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Q&A #3511


Addition of two digit numbers

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From: Claudia (for Teacher2Teacher Service)
Date: Apr 17, 2000 at 21:24:49
Subject: Re: Addition of two digit numbers

To help your nephew with two digit numbers, use base ten materials.  If you
do not have base ten materials, use centimeter grid paper to cut ones, tens,
and hundreds.  Play a game rolling dice to decide how many new ones to add.
Each time you have 10 or more ones, trade them in for one ten.  Working with
Base ten materials helps a student understand place value and renaming.
Build traditional problems right out of the text book.  Example:  13 + 7 = 2
tens or 20.  Teach the young child to draw a picture of the problem, build
it with manipulatives, then they will understand the algorithm.  Do not just 
use flash cards or give more pencil/paper practice.  You can also use a deck 
of cards, by removing the face cards, then playing a drawing game.  Draw two
number cards and find the sum by adding on to the largest.  Example:  7 and
8 = 8 plus the 7 (clubs, hearts, etc.)  Please email me directly, if you want
more examples.

 -Claudia, for the Teacher2Teacher service

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