Exercises: Subtraction

7412 - 4308

Subtract from left to right. First, subtract the ones. Since 8 is greater than 2, you need to calculate 12 - 8 = 4 instead and "memorize" a 1 at the tens.

$\begin{array}{l}7412\\ \underline{-430_{1}8}\\ 4\end{array}$

Then, subtract the tens: 1 - 1 = 0.

$\begin{array}{l}7412\\ \underline{-430_{1}8}\\ 04\end{array}$

Now subtract the hundreds: 4 - 3 = 1.

$\begin{array}{l}7412\\ \underline{-430_{1}8}\\ 104\end{array}$

And finally subtract the thousands: 7 - 4 = 3.

$\begin{array}{l}7412\\ \underline{-430_{1}8}\\ 3104\end{array}$

The final result is 3104.

3371 - 2250

Subtract from right to left. First, subtract the ones: 1 - 0 = 1.

$\begin{array}{l}3371\\ \underline{-2250}\\ 1\end{array}$

Then, subtract the tens: 7 - 5 = 2.

$\begin{array}{l}3371\\ \underline{-2250}\\ 21\end{array}$

Now subtract the hundreds: 3 - 2 = 1.

$\begin{array}{l}3371\\ \underline{-2250}\\ 121\end{array}$

And finally subtract the thousands: 3 - 2 = 1.

$\begin{array}{l}3371\\ \underline{-2250}\\ 1121\end{array}$

The final result is 1121.

5342 - 4357

Subtract from right to left. First, subtract the ones. Since 7 is greater than 2, you need to calculate 12 - 7 = 5 instead and "memorize" a 1 at the tens.

$\begin{array}{l}5342\\ \underline{-435_{1}7}\\ 5\end{array}$

Then subtract the tens. Since 6 is greater than 4, you need to calculate 14 - 6 = 8 instead and "memorize" a 1 at the hundreds.

$\begin{array}{l}5342\\ \underline{-43_1{5}_{1}7}\\ 85\end{array}$

Now subtract the hundreds digit. Since 4 is greater than 3, you need to calculate: 13 - 4 = 9 instead and "memorize" a 1 at the thousands.

$\begin{array}{l}5342\\ \underline{-4_1{3}_1{5}_{1}7}\\ 985\end{array}$

And finally subtract the thousands: 5 - (4 + 1) = 5 - 5 = 0.

The final result is 985.

2395 - 1852

Subtract from right to left. First, subtract the ones: 5 - 2 = 3.

$\begin{array}{l}2395\\ \underline{-1852}\\ 3\end{array}$

Then, subtract the tens: 9 - 5 = 4.

$\begin{array}{l}2395\\ \underline{-1852}\\ 43\end{array}$

Now subtract the hundreds. Since 8 is greater than 3, you need to calculate 13 - 8 = 5 instead and "memorize" a 1 at the thousands.

$\begin{array}{l}2395\\ \underline{-1_{1}852}\\ 543\end{array}$

And finally subtract the thousands: 2 - 2 = 0.

$\begin{array}{l}2395\\ \underline{-1_{1}852}\\ 543\end{array}$

The final result is 543.

8560 - 4320

Subtract from right to left. First, subtract the ones: 0 - 0 = 0. (That was easy).

$\begin{array}{l}8560\\ \underline{-4320}\\ 0\end{array}$

Then, subtract the tens: 6 - 2 = 4.

$\begin{array}{l}8560\\ \underline{-4320}\\ 40\end{array}$

Now subtract the hundreds: 5 - 3 = 2.

$\begin{array}{l}8560\\ \underline{-4320}\\ 240\end{array}$

And finally subtract the thousands: 8 - 4 = 4.

$\begin{array}{l}8560\\ \underline{-4320}\\ 4240\end{array}$

The final result is 4240.

4599 - 1327

Subtract from right to left. First, subtract the ones: 9 - 7 = 2.

$\begin{array}{l}4599\\ \underline{-1327}\\ 2\end{array}$

Then, subtract the tens: 9 - 2 = 7.

$\begin{array}{l}4599\\ \underline{-1327}\\ 72\end{array}$

Now subtract the hundreds: 5 - 3 = 2.

$\begin{array}{l}4599\\ \underline{-1327}\\ 272\end{array}$

And finally subtract the thousands: 4 - 1 = 3.

$\begin{array}{l}4599\\ \underline{-1327}\\ 3272\end{array}$

The final result is 3272.