Maths- addition
431
+ 172
=
Start with column furthest to the right, when dealing with whole
numbers this is the units column.
Add these two numbers together.
1+2=3
3
431
Move on to the next column to the left, in this case this the tens
column.
Add the two numbers together like you did with the units column.
+ 172
=
7+3=10
1
Write the zero underneath the two digits you added up then
carry the one that was left over to the next column on the left.
431
Final column, add up the numbers you have done previously
including the one you carried over.
03
+ 172
4+1+1=6
1
=
603
1. 45+78
3. 125+231
5. 491+
2. 36+91
4. 521+131
510
6. 121+381
Answers
1.
2.
3.
4.
5.
6.
123
127
356
652
1001
502