Subtract 1 or 10

The  exercise appears under the Early math Math Mission. This exercise has the Khan Academy user practice subtracting one or ten to a two-digit number.

Types of problems
There is one type of problem in this exercise:
 * 1) Add the numbers: This problem asks the student to subtract two numbers and type the answer. The answer's always between under and 100. The number the student is subtracting from the two-digit number is either one or ten Subtracting1or10.png

Strategies
Knowledge of subtracting small numbers within 100 are encouraged to ensure success while doing this exercise.
 * 1) The answers in this exercise are always under 100.
 * 2) There is no regrouping in this exercise.

Real-life Applications

 * 1) Subtraction can be used for subtracting objects, like subtracting expenses from profit to find money totals.