Addition Instruction

The above two equations have the same value and are very straightforward. It is important to know that the order of numbers does not make a difference in addition (or multiplication). For example:

Some complications arise when larger numbers are used and you need to carry numbers.

Note: When you see a math problem laid out horizontally as in the box immediately above, rearrange the numbers so that they are vertical (on top of each other) to make the addition easier to do.

Example

(A)
Start by adding up the numbers in the right most column. The result is 17. The seven remains but the one is carried over to be added to the next column of numbers.

(B)
The same rules apply to the sum 20 in the second column. The 0 remains in the second row, while the 2 is carried over to the column to the left to be added.

(C)
The final column is then added and the answer is recorded.

Peer Support

If you are having difficulty with the subject matter, there is always a great deal of support available to you from other members through the Forum. Simply do a search for the material you need help with (math, algebra, integers, etc.) Members are very supportive and helpful. Don't hesitate to post any questions, or provide answers to others seeking assistance.

Addition Practice Tests

Work through the following tests to make sure you are comfortable with the material.

Practice Questions

Try these practice questions. The answers are posted below.

a) 75 + 22 =

b) 194 + 331 =

c) 632 + 521 + 251 =

d) 63 + 104 + 225 =

e) 532 + 159 + 878 =

f) 412 + 222 + 141 =

g) 499 + 10 + 1 =

h) 349 + 7 + 47 =

i) 215 + 821 + 521 =

j) 274 + 890 + 981 =

Answers

a) 97
b) 525
c) 1404
d) 392
e) 1569
f) 775
g) 510
h) 403
i) 1557
j) 2145