Florida B.E.S.T. MA.1.AR.1

MA.1.AR.1 is a B.E.S.T. standard. These are the benchmarks under it.

• MA.1.AR.1.1

  Apply properties of addition to find a sum of three or more whole numbers.

• MA.1.AR.1.2

  Solve addition and subtraction real-world problems using objects, drawings or equations to represent the problem.

01

What Students Need to Do

Students combine groups and find missing parts or amounts left, using numbers through 20. They use an addition fact they know to solve a related subtraction problem.

02

What Mastery Looks Like

Students solve accurately using objects, drawings, counting strategies, or known facts. They can write a related addition fact to explain a subtraction answer.

03

Common Misconceptions

Students may subtract the smaller number from the larger number without considering the story. They may also miss that the same three numbers form related addition and subtraction equations.

04

How to Assess It

Give this exit ticket: “Mia had 13 stickers and gave away 5. Write a related addition fact, then find how many remain.”

1. 01

   Build 14 with linking cubes, hide 6 under a cup, find the missing part, and write two related equations.

2. 02

   Ask, “How can 7 + 6 = 13 help you solve 13 − 7?” and have students explain with words or drawings.

3. 03

   Give pairs fact-family triangle cards and have students race to write the four equations made by the three numbers.

4. 04

   Set up 15 classroom pencils, remove 7 for a supply bin, and have students find and explain how many remain.

• MA.2.AR.1

  Solve addition problems with sums between 0 and 100 and related subtraction problems.

• MA.2.NSO.2.1

  Recall addition facts with sums to 20 and related subtraction facts with automaticity.

• MA.K.AR.1

  Represent and solve addition problems with sums between 0 and 10 and subtraction problems using related facts.

• MA.1.NSO.2.2

  Add two whole numbers with sums from 0 to 20, and subtract using related facts with procedural reliability.