3rd Grade Math Study Guide

3^rd Grade 2^nd 9 Weeks Math Study Guide:

Unknown Numbers:   7 x ? = 35          36 divided ? = 6

Properties of Operation:

Commutative Property      7 x 2=    2x7=                     order does not matter

Associative Property          (3 x 5) x 2 =      5 x (3 x 2)=        order does not matter

Distributive Property        8 x 9 =

Multiplication/Division:           7 x 7=     8 x 6 =        18 divided 2 =           48 divided 8 =

Two-Step Word Problems:    Tom went to the store and bought a box of cookies that cost $5.  He also picked up a bag of apples for $6 and a pack of meat for $9.  How much change did she get back if she paid with $40?

Patterns:  Find the rule and finish the pattern.

5, 10, 15,__,___,___                                     2, 4, 8, 16,___                        3, 8, 13,__,__

Multiply by Multiples of 10:          40 x 8=                      90 x 3=            60 x 7=

Area:    Find the area of each shape.    

         

Multi-Step Word Problems

This week we will be working on two-step word problems.  Two-step word problems are also known as multi-step word problems.  This weeks notes are located below.

A two-step word problem is also known as a multi-step word problem.

Two-Step wp- uses 2 operations in the word problem in order to solve.

Multi-Step wp- uses 2 or more operations to solve a word problem.

Four Operations:

• Addition
• Subtraction
• Multiplication
• Division

Keywords:
words that state what operation to do

Addition
add
plus
all together
sum
in all

Subtraction

subtract
difference
how many more than
how many fewer
take away

minus

Multiplication
multiply
product
factors
multiples
times

as many as

Division
divide
quotient
dividend
divisor
divided by
equally
equal groups
share

pass out

Circle the numbers
Underline important words
Box the question
Eliminate unnecessary information
Solve the problem and check
Craig has a twenty dollar bill. He buys six squirt guns for $2 each. How much money did Craig have left?
Step One:
Hidden Question:  How much did Craig spend?   
6 x 2 = 12 

Step Two:
Subtract the amount he spent from how much he has.
20 - 12 = 8  

For more examples of these word problems, please visit the Fun Videos and Websites! page of the blog.