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Repeated addition
Repeated-addition 256
Description
Exercise Name: Repeated addition
Math Missions: Early math Math Mission
Types of Problems: 2

The first instance of the Repeated addition exercise is under the Early math Math Mission. This exercise helps users see how multiplication piggy-backs off of addition through adding the same quantity multiple times.

Types of problems

There are two types of problems that show up in this exercise:

  1. Select expressions that count objects: This problem has a pictured collection of objects arranged in rows and columns. The user is to select the correct expressions that represent the total number of objects in the collection.
    Repadd-1

    Select expressions that count objects

  2. Select expressions that describe situation: This problem describes a situation, often accompanied by a chart. The user is to answer the question by selecting the expressions that evaluate to the answer to the problem.
    Repadd-2

    Select expressions that describe situation

Strategies

The accuracy badges are fairly easy here, but the speed badges are medium difficulty because of the needed multiple selection.

  1. Most problems have two answers, adding the higher number of small groups and adding the smaller number of large groups. For example, {6=2+2+2=3+3}.
  2. The exception to the previous hint is when the number is a perfect square and you have the same number of groups as the size of the groups. In this case, there is only one solution.
  3. Repeated addition is just multiplication.

Real-life Applications

  1. Addition can be used for adding objects, like adding money totals.
  2. Addition is a major fundamental for higher math levels like algebra, calculus, and more.

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