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Subtract within 20
Subtraction 2 256
Description
Exercise Name: Subtract within 20
Math Missions: Early math Math Mission, 3rd grade (U.S.) Math Mission, Arithmetic essentials Math Mission, Mathematics I Math Mission
Types of Problems: 1

The Subtract within 20 exercise appears under the Early math Math Mission, 3rd grade (U.S.) Math Mission, Arithmetic essentials Math Mission and Mathematics I Math Mission. This exercise practices basic subtraction facts using numbers up to twenty.

Types of problems

There is one type of problem that shows up in this exercise:

  1. Subtract the numbers: A subtraction problem is given and the user is asked to provide the answer.
    Subin20


Strategies

Basic knowledge of subtraction is required for this exercise.

  1. This problem is easy to get both accuracy badges and speed badges since the problem involved has fairly small numbers and there is question in each problem.

Real-Life Application

  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.

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