**Chapter 4: Multiply with One-Digit Numbers**

**What are we learning in this chapter?**

Answers to Math Homework

4.NBT.1 - 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. For example, recognize that 700 ÷ 70 = 770 by applying concepts of place value and division.

4.NBT.3 - Use place value understanding to round multi-digit whole numbers to any place.

4.NBT.5 - Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit 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.

4.NBT.1 - 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. For example, recognize that 700 ÷ 70 = 770 by applying concepts of place value and division.

- I can multiply multiples of 10, 100, and 1000 using basic facts and patterns (4-1).

4.NBT.3 - Use place value understanding to round multi-digit whole numbers to any place.

- I can multiply a single digit by a two-digit number using what I know about place value( 4-3, 4-5).
- I can estimate products by rounding to the greatest place value (4-2).

4.NBT.5 - Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit 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.

- I can multiply a single digit by a two-digit number using what I know about place value( 4-3, 4-5).
- I can use models to help me multiply by one digit numbers (4-4).
- I can regroup to find the product (4-6).
- I can use the Distributive to make multiplying easier by breaking up factors into parts (4-7).
- I can multiply two-digit numbers by regrouping (4-8).
- I can multiply factors greater than two by using the same steps used to multiply by a two-digit number (4-9).
- I can use the Distributive Property or Partial Products to multiply a one-digit number by a multi-digit number with zeros (4-11).

**Lesson 1: Multiples of 10, 100, and 1000**