Here Are Some Things You Need to Know to Help You Child Learn Their Addition Fact Quickly

Here are some things you need to know to help you child learn their addition fact quickly.

Parts of an addition problem.

5+7=12

The numbers next to the addition symbol are called addends.

The answer to an addition problem is called the sum.

In the above example, 5 and 7 are addends and 12 is the sum.

Turn-around Facts

Facts that have the same addends in a different order.

5 + 7 = 12 and 7 + 5 = 12

are turn-around facts.

The addition facts are grouped into several groups based on the types of addends they have and how they are solved.

ZEROS

Defined-These are facts that have a zero as one of the addends.

To solve-The sum is the other addend.

Example-5 + 0 = ?

One addend is zero, so the sum is the other addend, 5.

5 + 0 = 5

COUNTING ON

Defined-These facts are ones that have 1, 2, or 3 as one of the addends.

To solve-Put the bigger addend in your fist, and COUNT ON using the fingers on the same hand.

Example-6 + 3 = ?

Make a fist and say “6”. Then count on by lifting fingers saying…

“7, 8, 9”. 6 + 3 = 9.

Exceptions-9 + 1=8 + 2 = 7 + 3 =

The above and their turnaround facts are considered EQUALS TEN facts.

2 + 3 =3 + 4 =

The above and their turnaround facts are considered NEAR DOUBLES facts.

DOUBLES

Defined-Facts where the addends are the same

To solve-Memorize these answers.

Example-5 + 5 = 10

NEAR DOUBLES

Defined-Facts where the addends are sequential numbers and their turn-around facts.

To solve-Double the smaller number and add one.

Example-6 + 5 = ? or 5 + 6 = ?

5 doubled (5+5) is 10. Add one… 11

6 + 5 = 11

Exceptions-0 + 1= 1This fact and its turnaround fact are considered

ZEROS facts

1 + 2 = 3This fact is and its turn-around fact are considered

COUNTING ON facts

ADDING NINE

Defined-Facts that have a nine as an addend

To solve-Make the “other” number one less and put a ten in front.

(The “other” number is the addend that is not a nine)

Example-6 + 9 = ?

The other number is 6.

Make it a 5.

Put a ten in front of it. 15.

6 + 9 = 15.

EQUALS TEN

Defined-Facts whose sums equal ten

To solve- Memorize

Example-8 + 2=7 + 3 =6 + 4 =

Exceptions9 + 1= is considered a COUNTING ON fact.

5 + 5= is considered a DOUBLES fact

TOUGHIES

Defined-These five facts and their turn-around facts.

4 + 7 = 115 + 7 = 12

4 + 8 = 125 + 8 = 136 + 8 = 14

To solve-Memorize, or use the same strategy as adding nine, only instead of making

the “other” number one less, make it TWO less for the facts with 8 as an addend, or THREE less for the ones with 7.

Example-5 + 8 = ?

Think, to make a ten, add two to 8, take two from 5, and put the ten in front. Two less than 5 is 3, put a ten in front 13

5 + 8 = 13