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Common Core: Math
Subject: Math
105 Results

 The module closes with questions such as, “What number is 10 less than 402?” and “What number is 100 more than 98?” As students have been counting up and down throughout the module, these three...

 Objective: Model 1 more and 1 less, 10 more and 10 less, and 100 more and 100 less when changing the hundreds place.

 Objective: Use math drawings to represent equal groups, and relate to repeated addition.

 Number disks make comparison of numbers very easy. More than and less than lead to the addition and subtraction in the next module. In Lesson 16, students compare using the symbols <, >, and =...

 Objective: Use math drawings to represent the composition and relate drawings to a written method.

 Objective: Use math drawings to represent the composition when adding a twodigit to a threedigit addend.

 Grade 2 Math Common Core Instruction: Use modeling and tools to solve three digit subtraction problems

 Objective: Use math drawings to represent the composition when adding a twodigit to a threedigit addend.

 Objective: Add and subtract multiples of 100 including counting on to subtract.

 In Lesson 17 of Topic D, students extend the base ten understanding developed in Topic A to numbers within 200. Having worked with manipulatives to compose 10 ones as 1 ten, students relate this to...

 Objective: Relate manipulative representations to a written method.

 Objective: Use mental strategies to relate compositions of 10 tens as 1 hundred to 10 ones as 1 ten.

 Objective: Use math drawings to represent equal groups, and relate to repeated addition.

 Objective: Use math drawings to represent subtraction with and without decomposition and relate drawings to a written method.

 Objective: Solve additions with up to four addends with totals within 200 with and without two compositions of larger units.

 Topic E begins with an extension of mental math strategies learned in first grade, when students learned to subtract from the ten by using number bonds. In Lesson 23, they return to this strategy to...

 Objective: Decompose arrays into rows and columns, and relate to repeated addition.

 Objective: Add multiples of 100 and some tens within 1,000.

 Objective: Represent subtraction with and without the decomposition when there is a threedigit minuend.

 Module 4 culminates with Topic F, in which students think about and discuss the multiple strategies they have learned to represent and solve addition and subtraction problems. They share their...

 Objective: Relate manipulative representations to the addition algorithm.

 Objective: Use number bonds to break apart threedigit minuends and subtract from the hundred.

 Objective: Use the associative property to make a hundred in one addend.

 Objective: Use manipulatives to represent additions with two compositions.