Unit 3 : Multi-digit operations and Measurement  (Lessons 11-16) 

Action Words:  A list of words to help you decide what operation is necessary. 

Lesson 11: Multiply by one-digit numbers

• Multiplication process - students can use any method they feel comfortable with when multiplying a number up to 4 digits by a 1 digit number.

• Use arrays, area models, and partial products to multiply 

• Use estimation to determine whether answers are reasonable

Lesson 12: Multiply by two-digit numbers

• Multiply a two-digit number by a two-digit number.

• Use area models and partial products to multiply.

• Use estimation to determine whether an answer is reasonable.

Lesson 13: Use multiplication to convert measurement

• Identify relative sizes of measurements within one system.

• Identify the units of measurement within a measurement system

• Convert measurement from a larger unit to a smaller unit within the same system.

• Use a conversion table showing equivalent measurements within the same system

• Multiply whole numbers of up to four digits by one-digit whole numbers.

• Multiply a two-digit number by a two-digit number.

Lesson 12

• Multiplication process - students can use any method they feel comfortable with when multiplying a number up to 2 digits by 2 digits.

Lesson 14 and 15 - Division

Area Model method  of Division

This is the strategy we will be showing students.  It is very similar to the long division traditional algorithm.   

Division Practice Worksheets to help with the process.  

We start with making groups so students understand what division is.  

Then we work on finding products that are close to the number that we want to divide without going over.  

We will then learn how to divide three and four digits numbers by one-digit numbers.

Students will be checking their division answers with multiplication( if there is a remainder they will need to remember to add that to it so they get the correct answer. Please see the video above).

Then we will practice what it means to interpret the answer in relation to the problem.   Students will be looking at the remainder and understand what to do with it.  

Dividing into groups

Please keep in mind the numbers are getting bigger and placing 1 digit in each box is not effective.

Students will need to use their knowledge of basic fact first and compare.  This is where the understanding of place value and number comparison is important.