## 4th Grade Operations and Algebraic Thinking

With every grade level students are require to complete more challenging computational problems.

In fourth grade students are must be able to:

- Solve multi-step problems involving addition, subtraction, multiplication, and addition.
- Understand number factors for numbers less than 100.
- The factors of 50 include 25, 2, and 5x 10, and since 10 is 5 x 2, this means that 5x5x2 is 50. 25 is a factor of 50 but it is not prime so it can be reduced farther to 5 x 5. So the prime factors of 50 are 5, 5, and 2.

- Generate and identify patterns in numbers.

CCSS.MATH.CONTENT.4.OA.A.1| Use the four operations with whole numbers to solve problems.

Interpret a multiplication equation as a comparison, e.g., interpret 35 = 5 × 7 as a statement that 35 is 5 times as many as 7 and 7 times as many as 5. Represent verbal statements of multiplicative comparisons as multiplication equations.

Standards: 4.OA.A.1:

CCSS.MATH.CONTENT.4.OA.A.2| Use the four operations with whole numbers to solve problems.

Multiply or divide to solve word problems involving multiplicative comparison, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem, distinguishing multiplicative comparison from additive comparison.

Standards: 4.OA.A.2:

CCSS.MATH.CONTENT.4.OA.A.3| Use the four operations with whole numbers to solve problems.

Solve multistep word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.

Standards: 4.OA.A.3:

CCSS.MATH.CONTENT.4.OA.B.4| Gain familiarity with factors and multiples.

Find all factor pairs for a whole number in the range 1-100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1-100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1-100 is prime or composite.

Standards: 4.OA.B.4:

CCSS.MATH.CONTENT.4.OA.C.5| Generate and analyze patterns.

Generate a number or shape pattern that follows a given rule. Identify apparent features of the pattern that were not explicit in the rule itself.

Standards: 4.OA.C.5