Learning resources > Addition and Subtraction
Introduction to Addition
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First additions
PRACTICE EXERCISES »

1
Introduction to Addition

First additions Addition tables up to 3 Addition tables up to 7 Addition tables up to 10 Adding 3 digits horizontally Adding Tens and Units Adding Tens to Tens or Hundreds Adding round Tens and inexact Tens Adding inexact Tens and Units Adding hundreds, exact tens, and units Adding inexact hundreds and exact hundreds Adding inexact hundreds and units Adding inexact hundreds and exact tens

2
Introduction to Subtraction

First subtractions Subtraction tables up to 3 Subtraction tables up to 7 Subtraction tables up to 10 Tens and hundreds minus tens Subtracting tens from inexact tens Subtracting units from inexact tens Problems with minuends less than 100 with the result of an exact ten Problems with minuends less than 100 and with the result of a unit Inexact hundreds minus exact hundreds Subtracting units from inexact hundreds Problems using minuends greater than 100 with the result of a hundred Problems using minuends greater than 100 with the result of a ten Subtracting Ten from inexact Hundreds Problems with minuends more than 100 and with the result of a unit

3
Column Addition

Vertical addition without carrying Vertical addition with carrying up to 1000 Vertical addition with carrying up to 10000

4
Column Subtraction

Vertical subtraction without carrying Vertical subtraction with carrying up to 1000 Vertical subtraction with carrying up to 10000

5
Addition and Subtraction

Relationship of addition with subtraction Relationship of subtraction with addition

6
Introduction to Addition and Subtraction with the Rekenrek

Addition (adding) problems with the rekenrek Horizontal subtraction, up to 10, with the rekenrek Addition (comparing) problems with the rekenrek Addition (matching) problems with the rekenrek Subtraction (removing) problems with the rekenrek Horizontal subtraction, up to 10, using the rekenrek Subtraction (comparing) problems with the rekenrek Subtraction (matching) problems with the rekenrek

7
Addition Strategies

Break down the two numbers Break down one of the numbers Break down to reach an exact ten Adding 8 and 9 Adding 11 and 12 Adding two consecutive numbers Adding numbers that are two numbers apart

8
Subtraction Strategies

Breaking down two numbers Breaking down a number Breaking down to reach an exact ten Breaking down the subtrahend Breaking down the minuend Finding the solution to a subtraction using addition
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