Essential Question: How can we use estimation and mental math strategies to quickly and accurately solve mathematical problems?

Focus Standards

Operations and Algebraic Thinking: Students will extend understanding of multiplication and division and apply operational properties to solve problems involving variables.

• 4.A.1.b Multiply up to a four-digit whole number by a one-digit whole number and multiply a two-digit whole number by a two-digit whole number, using strategies based on place value, properties of operations, and algorithms. 

• 4.A.1.c Divide up to a four-digit whole number by a one-digit divisor with and without a remainder using strategies based on place value. 

• 4.A.1.d Determine the reasonableness of whole number products and quotients using estimations and number sense.