Unit 5 Overview:

Fourth graders will focus on place value to round multi-digit whole numbers to any place and express multi-digit whole numbers using base-ten numerals, number names and expanded form. Students will recognize that in a multi-digit whole number, a digit in one place represents ten times what it represents in the place to its right, and work with numbers less than or equal to one million. This knowledge will be used in computation of addition and subtraction. Students will be introduced to the strategy of the Standard Algorithm for subtraction (addition covered in Unit 1). They will be solving multi-step problems involving addition and subtraction.

• Students will recognize that a digit in any multi-digit whole number represents ten times as much as it represents to the place to its right. (NBT.A.1)
• Students will read and write multi-digit whole numbers using base-ten numerals, number names, and expanded form. Compare two multi-digit numbers based on meanings of the digits in each place, using >,<, or = symbols to record the results of comparisons. (NBT.A.2)
• Students will round multi-digit whole numbers to any place by making generalizations in a variety of situations to determine if their answer is reasonable. (NBT.A.3)
• Students will fluently subtract multi-digit whole numbers using the standard algorithm. (NBT.B.4)
• Students will use addition and subtraction to solve multi-step (at least 3 steps) word problems and write equations to represent the unknown quantity. (OA.A.3)