Number and Operations I  (Unit 1)

  • I can multiply multi-digit whole numbers using multiple efficient strategies (5.1.1.4)
  • I can solve real-world and mathematical problems in different ways, and assess the reasonableness of my answers. (5.1.1.4)
  • I can estimate the solution of a problem to determine if my answer is reasonable (5.1.1.3)
  • I can divide multi-digit whole numbers using multiple efficient strategies and represent the quotient in a variety of ways. (5.1.1.1)
  • I can analyze the situation of a story problem and define the quotient based on the situation. (5.1.1.2)

Videos:

MULTIPLICATION

Multiplication Made Easy (memorizing multiplication facts) - 1 digit x 1 digit basic facts

Multiplication Strategies with 2 digit by 2 digit

Multiplication - Area Array Model

Lattice Method with 3 digit x 2 digit numbers

 

DIVISION

Partial Quotient Strategy for 4th and 5th Grade - (good to help parents understand the why behind this method)

The Big 7 Divison Strategy

Box Method for Long Division

 

FACTORS AND MULTIPLES

Mulitples of a Number.  How are factors and multiples related?

Finding Factors and Multiples - Khan Academy

 

REASONABLE AND UNREASONABLE ANSWERS

Reasonalble and Unreasonable:  Estimation in word problems

Answer Reasonableness

 

ESTIMATION

Multiplication Estimation Example Khan Academy

Estimating Quotients

 

Worksheets:

Math-Aids.com - multiplication

Commoncoresheets.com - multiplication

Math-Aids.com - division

Commoncoresheets.com - division