Counting Math Example 1

Follow the full solution, then compare it with the other examples linked below.

Example 1

easy
A student counts the dots on a domino. The left side has 3 dots and the right side has 4 dots. How many dots are there in total?

Solution

  1. 1
    Count the left side: 1, 2, 3 — there are 3 dots.
  2. 2
    Count the right side: 1, 2, 3, 4 — there are 4 dots.
  3. 3
    Count all dots together starting from 1: 1, 2, 3, 4, 5, 6, 7 — the total is 7 dots.

Answer

77
Counting assigns one number to each object in sequence. The last number spoken is the total (cardinality). Counting on from the first group (starting at 3 and continuing 4, 5, 6, 7) is a key efficiency strategy.

About Counting

Determining the total number of objects in a set by assigning exactly one number to each object in sequence, where the last number spoken equals the total count (the cardinality of the set).

Learn more about Counting →

More Counting Examples

Example 2 medium

How many letters are in the word MATHEMATICS? Count carefully — some letters repeat.

Example 3 easy

Skip-count by 5s starting at 5 and list the first six multiples.

Example 4 medium

A bag contains red, blue, and green marbles. There are 4 red, 3 blue, and 5 green marbles. Without c

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Related Concepts

AdditionNumber Sense