Back to School Common Core Task Cards - Fourth Grade Math

Operations and Algebraic Thinking 4.OA
Use the four operations with whole numbers to solve problems.

1. 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.

2. 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 rep-resent the problem, distinguishing multiplicative comparison from additive comparison.

3. 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.