Why would learning different methods of multiplication be useful for teaching students?
-students learn and think differently
-more in depth understanding of what multiplication is
100
Solve 144/12
Use: Traditional Method
Answer: 12 R 0
100
Solve:
36 x 7 and explain how you solved it.
252
100
Solve:
955/5 and explain how you solved it.
191
100
Estimate the sum of these two numbers by rounding:
1,742 + 3,685
1,700 + 3,700 = 5,400
200
What method of multiplication is this:
6 x 17 = 6 x (10 + 7)
= 60 + 42
= 102
Expanded!
200
Explain the traditional way of division.
Most commonly used and taught in classrooms. Uses each individual digit and “bringing down” numbers to come up with answer.
200
Solve:
27 x 34 and explain how you solved it.
918
200
Solve:
940/4 Using Traditional.
235
200
Round these two numbers using the Adjusted Method:
1,742 + 3,685
1,000 + 3,000 = 4,000
700 + 600 = 1,300
=5,300
300
What kind of multiplication is represented by something such as coins?
Decade!
300
If 6 children get to split 28 pieces of candy, how would they most likely split the candy evenly?
Distribution!
300
Solve:
34 x 64 and explain how you solved it.
2176
300
Solve:
945/15 in the non-traditional way
63
300
what is 219 rounded to tenths
220
400
What method of multiplication is this:
6 x 17
Think: 6 x 7 = 42
Write 2 in ones place regroup 4 tens
6 x 10 = 60
60 + 40 = 100
Final Answer: 102
Traditional!
400
What are two different ways to divide and give an explanation of each.
Alternative: Also known as the ladder method, allows students to see each subtraction and gives them great flexibility in choosing their trial quotients.
Traditional: Most commonly used and taught in classrooms. Uses each individual digit and “bringing down” numbers to come up with answer.
Simple: Repeat Subtraction
400
Solve:
72 x 4 Using Alternative
288
400
Solve:
135/15 Using Alternative.
9
400
You have to buy 36 T-shirts for your club for $23 each. About how much money do you need?