Grade 5 Math

Teacher DanFall 2015

Multiplication and Division

VOCABULARY

•whole number:

A positive number with no fraction or decimal part.

Example: 5, 49 and 980 are all whole numbers.

Multiplication and Division

VOCABULARY

•digit: A symbol used to make numbers.Ex: 4, 5, 0, 1,…

Multiplication and Division

VOCABULARY

•place value: The value of where the digit is in the number

Example: ones, tens, hundreds, thousands,…

Multiplication and Division

VOCABULARY

•observe: to see, listen or notice someone or something

Multiplication and Division

VOCABULARY

•multiply: The idea of repeated addition.For example:

5 × 3 = 5 + 5 + 5 = 15

Multiplication and Division

VOCABULARY

•divide: To divide is to split into equal parts or groups. It is "fair sharing".

• Example: there are 12 chocolates, and 3 friends want to share them, how do they divide the chocolates?

Answer:

They should get 4 each.

Problem Solving Techniques

1. record information

2. observe the problem

3. draw the model

4. solve the problem with the math you know

5. write the answer properly

Problem Solving Techniques: #1

• Parts and Wholes•To observe the parts and wholes in the problem, then recognize the parts and understand how they make the whole

Parts and Wholes ex. 1

• Last week, 26,000 students took tests. Of those students, 19,612 took a language arts test and 5,000 took a math test. Of the remaining students, 10 took a history test. The remaining students took a science test. How many students took a science test?

Parts and Wholes: ex.2

• The Edwards family spent $13,000 on new furniture. They spent $8,800 on a sofa set and $3,480 on a dining table. They spent the remaining money on 2 identical chairs. How much money did they spend on each chair?

Parts and Wholes: You try!

• A shopkeeper had 4,895 pens and 16,207 pencils in her shop. She sold 2,680 pens and 7,986 pencils. She then threw away 16 faulty pens. How many total pens and pencils are left?

Parts and Wholes: You try!

• A desk costs $387, and a cupboard costs twice as much as the desk. Sam bought 1 desk and 2 cupboards. If he had $3,000, how much money does Sam have left?