Multiplication Story Problems

1. Take two dice and roll them. The numbers you get are your two factors. Figure out what the product is.
2. Create a multiplication story problem for the equation you created and solved in step 1.
3. Type your problem with the answer below as a comment.
4. Don't forget to put your name!

Math in the Real World

Today we had two parents come in and talk to us about how they use math in their job - a nurse and an accountant. It was very interesting!

What's something you learned from their visit?

Multiplication Tips

Multiplying by 0:

The answer is always zero.

Example: 0x3 =0    0x5=0 

Multiplying by 1:

The answer is always the other number that is not 1.

Example: 1x6=6     10x1=10    500x1=500

Multiplying by 2:

Look at the other number that's not 2 and double it!

Example:
2x4 =  (double 4; 4+4)     2x4=8

2x8 = (double 8; 8+8)       2x8=16

2x12 = (double 12; 12+12) 2x12=24


Multiplying by 4:

Double Doubles! Take 4 and split it in half. Multiply each number by 2 and then double that answer.

Example:

4x8 =

2x8=16
2x8=16
then add 16+16
= 32

4x7 =

2x7=14
2x7=14
then add 14+14
= 28

4x15=

2x15=30
2x15=30
30+30
=60

Multiplying by 10:

Same rule as multiplying by 1. Look at the number that's not 10 and multiply it by 1 and then add on a zero OR count up by tens.

Example: 6x10=  (6x1=6, then add on a zero) = 60

8x10 = (8x1=8, then add on a zero)=80

Working Away!

We are working on wrapping up our unit in social studies on Saskatchewan and the landscape. We have been exploring the ecozones of SK and discussing what the land was like before settlers started coming here and how the First Nations lived off the land and how it has changed today. We also had many great discussions throughout this unit about the treaties!