Take the numbers being added, for this example, use the numbers 14 and 12. Use the tens value and ones value when adding. The first digit is always the tens value and the second digit is always the ones value.
Line up the two numbers vertically and place the "+" sign beside the bottom number. Draw a line under the numbers to replace the "=" sign.
Start with adding the ones value digits first: "4+2." Write the answer "6" below the ones value line. Add the tens value digits: "1+1." Write the answer "2" below the tens value line. The final answer will be "26."
Line up the numbers that are being subtracted vertically. Use the problem "49-37" for this example. Use the tens and ones values when subtracting. The tens value is always the first digit and ones value is always the second digit.
Line up the numbers directly below each other. Write the "-" sign beside the bottom number. Draw a line below the second number in place of the "=" sign.
Start with subtracting the ones value digits: "9-7." Write the answer "2" under the ones value line. Subtract the tens value digits: "4-3." Write the answer "1" vertically below the tens value line. The final answer will be "12."
Choose the numbers that are being multiplied; in this example, we will use "12x12." Line up the numbers vertically. Align the ones values and the tens values below one another. The tens values will always be the first digit and the ones value will always be the second digit. Draw a line underneath the numbers in place of the "+' sign.
Multiply the ones value digit of the bottom number with both the ones and tens value digits of the top number. Write down the answer of the ones values multiplication "2x4" underneath the ones value line. Write down the answer of the other multiplication "2x1" underneath the tens values line. Write the answer "28."
Place the digit "0" directly below the ones value of the number 28. Multiply the tens value digit from the bottom number with both the ones and tens values digits of the top number. Write down the answer of the ones values multiplication "1x4" in a new line below the 28. Write down the answer of the other multiplication "1x1," below the tens value digit of 28. Write the answer 14 down to the left of the zero; the 28 and the 140 now are vertically aligned.
Add the ones value digits "8+0." Add the tens value digits "2+4", and the digit "1" is aligned all alone, this means that it will be added to nothing which a zero. Write down the answers in the from right to left. The final answer will be "168."