Chapter 5 Multiply by TwoDigit Numbers
Lesson 1 Multiply By Tens
Objective: Students will multiply a whole number by a multiple of ten. Standard: 4.NBT.5 Multiply a whole number of up to four digits by a onedigit whole number, and multiply two twodigit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models. Related Links: Math Lines Flashcards Lesson 2 Estimate Products
Objective: Students will estimate products by rounding. Standard: 4.NBT.3 Use place value understanding to round multidigit whole numbers to any place. Related Links: Mathman Lesson 3 Hands On: Use the Distributive Property
Objective: Students will explore multiplying by twodigit numbers Standard: 4.NBT.5 Multiply a whole number of up to four digits by a onedigit whole number, and multiply two twodigit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models. Related Links: 
Vocabulary
Redeption code: FHTTXYKZSWSQ
User name: universal username susd Password: qwerty24 
Lesson 4 Multiply by a 2Digit Number
Objective: Students will estimate products by rounding.
Standard: 4.NBT.3 Use place value understanding to round multidigit whole numbers to any place.
Related Links:
Penguin Race
Math Playground
1. Stack the equation
2. Multiply bottom ones times top ones and record the answer
3. Multiply bottom ones times top tens and record the answer
4. Multiply the bottom tens times the top ones and record the answer
5. Multiply the bottom tens times the top tens and record the answer
Objective: Students will estimate products by rounding.
Standard: 4.NBT.3 Use place value understanding to round multidigit whole numbers to any place.
Related Links:
Penguin Race
Math Playground
1. Stack the equation
2. Multiply bottom ones times top ones and record the answer
3. Multiply bottom ones times top tens and record the answer
4. Multiply the bottom tens times the top ones and record the answer
5. Multiply the bottom tens times the top tens and record the answer


Lesson 5 Estimate Products
Objective: Students will multiply two twodigit numbers.
Standard: 4.OA.3 Solve multistep word problems posed with whole numbers and having wholenumber 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.
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Objective: Students will multiply two twodigit numbers.
Standard: 4.OA.3 Solve multistep word problems posed with whole numbers and having wholenumber 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.
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Lesson 6 Problem Solving: Make a Table
Objective: Students will solve problems by making a table.
Standard: 4.NBT.5 Multiply a whole number of up to four digits by a onedigit whole number, and multiply two twodigit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
Related Links:
Objective: Students will solve problems by making a table.
Standard: 4.NBT.5 Multiply a whole number of up to four digits by a onedigit whole number, and multiply two twodigit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
Related Links: