Join Mrs. Gray for a Mystery Math Mistake! I wonder if she made a mistake in her drawing? Pack your bags – we’re going camping! We’ll see 10 friends, but some will be hiding in the tent. Can you figure out how many friends are hiding?

#### MI.Math.Content.K.CC.B.5

Count to answer “how many?” questions about as many as 20 things arranged in a line, a rectangular array, or a circle, or as many as 10 things in a scattered configuration; given a number from 1-20, count out that many objects.

#### MI.Math.Content.K.OA.A.1

Represent addition and subtraction with objects, fingers, mental images, drawings (drawings need not show details, but should show the mathematics in the problem), sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.

#### MI.Math.Content.K.OA.A.2

Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem.

#### MI.Math.Content.K.OA.A.4

For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation.

Visit the lesson page on MathMights.org for additional resources.