Use square tiles to decompose a rectangle. Use scissors to partition a rectangle into same-size squares, and compose arrays with the squares. Add and subtract multiples of 10 and some ones within Measure and compare lengths using standard metric length units and non-standard lengths units; relate measurement to unit size. Model numbers with more than 9 ones or 9 tens; write in expanded, unit, numeral, and word forms. Relate doubles to even numbers, and write number sentences to express the sums. Strategies for Adding and Subtracting Within 1, Standard:

Video Lesson 3 , Lesson 4: Understand Concepts About the Ruler Standard: Problem Solving with Coins and Bills Standard: Count up and down between and using ones and tens. Explore a situation with more than 9 groups of Apply concepts to create unit rulers and measure lengths using unit rulers. Subtract multiples of and some tens within 1,

# Homework Help / 2nd Grade

Use number bonds to break apart three-digit minuends and subtract from the hundred. Strategies for Composing Tens and Hundreds Standard: Represent subtraction with and without the decomposition of 1 ten as 10 ones with manipulatives.

Use square tiles to decompose a rectangle. Video Video Lesson 4: Creating an Inch Ruler Standard: Solve word problems involving the total value of a group of coins. Subtract multiples of and some tens within 1, Add within using properties of addition to make a ten.

Composite Shapes and Fraction Concepts Standard: Count the total value of ones, tens, and hundreds with place value disks. Use scissors to partition a rectangle into same-size squares, and compose arrays with the squares.

Investigate the pattern of even numbers: Apply concepts to create inch rulers; measure lengths using inch rulers. Write base ten three-digit numbers in unit form; show the value of each digit.

Describe two-dimensional shapes based on attributes.

Partition hommework and rectangles into equal parts, and describe those parts as halves, thirds, or fourths. Connect measurement with physical units by using iteration with an inch tile to measure. Make a ten to add within Use the associative property to subtract from three-digit numbers and verify solutions with addition.

Connect measurement with physical units by using multiple copies of the same physical unit to measure. Share and critique solution strategies for varied addition and subtraction problems within 1, Looking for video lessons that will help you in your Common Core Grade 2 math classwork or homework? Formation of Equal Groups Standard: Identify unknown numbers on a number line diagram by using the distance between numbers and reference points.

Video Lesson 10Lesson Video Lesson 20Lesson Try the given examples, or type in your own problem and check your answer with the step-by-step explanations. Subtract from and from numbers with zeros in the tens place.

Understand Concepts About the Ruler Standard: Strategies for Decomposing a Ten Standard: Add multiples of and some tens within 1, Student Explanations of Written Methods Standard: Solve word problems using data presented in a bar graph. Strategies for Decomposing Tens and Hundreds Standard: Subtract from multiples of and from numbers with zero in the tens place.