Divisibility Rules! Factor This! Can U Multiply The 4 step plan Exponents 100 2 100 7 100 12 100 17...

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Transcript of Divisibility Rules! Factor This! Can U Multiply The 4 step plan Exponents 100 2 100 7 100 12 100 17...

Divisibility Rules!

Factor This!

Can U Multiply

The 4 step plan

Exponents

100

2

1007

10012

10017

10022

2003

2008

20013

20018

20023

3004

3009

30014

30019

30024

4005

40010

40015

40020

40025

5006

50011

50016

50021

50026

FINAL JEOPARDY

The rule for being divisible by 2

The number ends in a 0, 2, 4, 6, or 8

100

3,065 is divisible by 5.

How do I know this?

It ends in a 5 or 0

200

Is 128 even or odd?

Even

300

The rule for divisibility by 3

Add the digits and see if the number is divisible by 3

400

Is 1280 divisible by 10? Why or why

not?

Yes, because it ends in a 0

500

Is 45 a prime or composite number?

Composite (95 = 555

100

Find the prime factorization of 25

55 or 55

200

What is the prime factorization of 12?

255

300

Is 9 prime or composite?

Composite

400

Name 5 prime numbers

2, 3, 5, 7, 11, 13, 17, 19, 23,29,31

500

What is another word that tells you to

multiply

times, of, factor, product

100

What is 3 x 11

33

DAILY DOUBLE

200

If 5 x 7 = 35, what does 35 5 =

7

300

Which answer is larger… 10 + 5

or 7 x 2

10 + 5

400

What is 3 x 2 x 4

24

500

What are the steps in the four step plan?

Find, Solve, Explain, Answer

100

How far does Jupiter travel in one day?

200

What is the find in this problem:

Jupiter orbits the sun at 8 miles each second. How far does Jupiter travel in one day?

Solve this problem.The bus left at 10:00 and arrives at your house 20

minutes later. What time did the bus get to your house?

10:20

300

What does the step EXPLAIN want you

to do?

Tell why you did the math (added or subtracted…)

400

Name three words/phrases that

mean subtract

take away, less, difference, less than, minus

500

What does 75 mean?

7 x 7 x 7 x 7 x 7

100

Write 4 x 4 x 4 using an exponent

43

200

Write “ten to the fifth power” as a product of the same factor

10 x 10 x 10 x 10 x 10

300

What does “squared” mean?

to the second power

400

What does “cubed” mean?

to the third power

500

What two numbers are neither prime nor

composite.

1 and 0