math test - 8A #2

What are factors?

numbers that get multiplied together

What are factors? (Divide ver)

a number that divides evenly into another number.

Which is the factor : 6×7=42

6, 7

Which is the product : 6 × 7 = 42

42

What is a product

An answer to a multiplication problem

What is LCM

Smallest common multiple of two or more numbers

What’s the least common multiple of 4 and 6?

12, 24, 36, 48…

What’s a multiple

the answer to 2 or more multiplied factors

What is GCF

greatest common factor

which comes first ; variant or number

variant

What is a power

a number expressed with exponents

What’s the base?

7

What’s the exponent? 

3

what’s the first step of the Prime factorization method for GCF?

divide the numbers by the nearest prime number.

what’s the second step of the Prime factorization method for GCF?

figure out the twinning numbers on the opposite side and circle them.

what’s the third step of the Prime factorization method for GCF?

pair them up and then multiple by each pair.

For the first 3 steps of the lcm do you do the same thing as GCF?

Yes

For LCM what’s the 4th step

Multiply the Pairs and the single numbers

Definition of prime numbers

Numbers with only 2 factors ; 1 and itself.

Definition of composite numbers

Composite numbers have 2 or more factors

is the number 1 prime or composite

None

What is a perfect number

A number that equals the total of its smaller factors

How does this image work for a perfect number

every prime factor added together is the same as the product

What’s 6²?

36

What’s 6×2

12

What’s 3^4

81

What’s the square root of 25?

5

What’s the GCF of 60 and 96?

12

What’s the GCF of 8 and 12

4

What’s the LCM of 6 and 9

18

What’s the LCM of 10 and 45

90

What’s the GCF of 120 , 210

30

What’s the LCM of 120,210

840

GCF a of 120, 45

15

LCM of 120, 45

360

Rosa is making a game board that is 16 by 24, she wants to use square tiles. What’s the largest tile she can use?

8

What’s the missing number : 5, 10, 15, __

20

What’s the expanded form of 4³

4×4×4

What’s the standard form of 4³

64

What’s the exponent form of 64

4³

Liam started an Overwatch Twitch channel on October 15, 2017. The next day his audience is 3 viewers. The day after he had 9 viewers and it continued to grow in this exponential pattern until October 21, 2017. Write a power to express the number of viewers Liam has on October 21st. There are 6 days that pass and it grows exponentially - 36 What is the total number of viewers that Liam has on Oct. 21st?

729

What is a scientist notation

A way to write numbers shorter.

What is 4500 in scientific notation?

4.5 × 10³

What’s 0.0062 in scientific notation?

6.2×10-³

8.7 × 10^1 into standard form

87

8.7 × 10² in expanded form

8.7 × 10 × 10

8.7 × 10-^1 in standard form

0.87

8.7×10-² in expanded form

8.7 × 1/10 × 1/10

2.7 × 10-³

0.0027

-201 × 10^4

20,100

2.87 × 10^9

2,870,000,000

Why would 12.3 × 10-² not work?

Because the factor before the decimal isn’t between 1-9

Write 0.00709 in scientific notation

7.09 × 10-³

Write 0.000811 in scientific notations

8.11 × 10^-4

1.72 × 10^4

17,200

6.9 × 10³

0.0069

A human body contains about 5.6 × 10^6 micro litres of blood. Write tgis number in standard notation.

5,600,000

(4.2×10³) (3.1×10²)

1.302×10^6

What’s square root

The opposite of squaring a number

1² =?

1

√1

1

√4

2

√9

3

√16

4

√25

5

What’s the radical

√

What’s a radicand

√(N)

What’s a principal square root

√# = (n)

√169

13

√196

14

√225

15

√27

5.2

What’s the first step of calculating square root ?

Place the values of the adjacent perfect squares on a number line

What’s the second step of calculating square root

Interpolate between the points to estimate to the nearest tenth

How to check if you square roots right

If your answer can multiply itself to get the radicand

A square shapes kitchen table has an area of 16 square feet. Will it fit through a van door that has a 5 foot wide opening

√16 = 4 , 4<5 so yes

√49-5+5

7

2√25+4

14

3√36+7

25

√21-5+9

13

√15

3.9

√300

17.3

√50

7.1

√122

11.1

√42

6.481

√961

31

√2052

45.299

Use the following formula to estimate the thickness of ice in cm needed to support each vehicle: Thickness(cm) 0.38√load(kg) a car with a mass of 800kg

10.748cm

Use the following formula to estimate the thickness of ice in cm needed to support each vehicle: Thickness(cm) 0.38√load(kg) And a truck with a mass of 1800kg

16.122cm

Explain how you know that √71 is between 8 and 9

Since 71 is between 64 and 81 and since √64=8 and √81=9, √71 must be between 8 and 9

What’s a term

The number

what’s an operator

multiply divide subtract add

20-(3+2)x3

5

3+(2×3² —3) /5

6

10+2×3

—————

10–2³

8

√25 + 4² / 8

7

(6+4)² + (11+10/2)

116

4 x (12 × 6 - 4² ) + 9

233

-5 + 2 (5×24)

235

3³□4□5=7 fill in the squares with addition, subtraction, multiplication, division

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