Fandom

Khan Academy Wiki

Subtract within 100

1,860pages on
this wiki
Add New Page
Talk0 Share
Subtract within 100
Subtraction 3 256
Description
Exercise Name: Subtract within 100
Math Missions: Early math Math Mission, Arithmetic essentials Math Mission, Mathematics I Math Mission
Types of Problems: 1

The Subtract within 100 exercise appears under the Early math Math Mission, Arithmetic essentials Math Mission and Mathematics I Math Mission. This exercise introduces users to subtraction with carrying.

Types of Problems

There is only one type of problem in this exercise:

  1. Subtracting with carrying: This type of problem introduces users to subtracting numbers with carrying. There are no hints for this type of problem, however, it isn't too difficult, as the numbers are all under 100.
Sub100

Strategies

Basic knowledge of subtraction is required for this exercise.

  1. This exercise is very easy to attain both accuracy badges and speed badges as the numbers are small.
  2. These problems are quite simple if users remember their basic subtraction! Subtract the numbers in the right column first and then carry the remainder (if any) over to the left. Then simplify.

Real-life Applications

  1. Subtraction can be used by businesses to see how much money they make minus the money they spent for profit.
  2. Subtraction is a major fundamental for higher math levels like algebra, calculus, and more.

Ad blocker interference detected!


Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.