Review/Preview Week 2

Review/Preview

Week 2

By Jessica Camacho

Finding out what number is multiplied by itself

​

Square root

Multiplying a number by itself

​

2² = 4

12² =144​

Square a number

Squaring a Number

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Squares & Square Roots

Today I will evaluate squares and their roots

Multiple Choice

2² = _____

• 2
• 6
• 4
• 16

Multiple Choice

13² = ______

• 225
• 196
• 169
• 166

Multiple Choice

7²

• 50
• 49
• 14
• 48

Multiple Choice

Which of the following is a perfect square?
¿Cuál de los siguientes es un cuadrado perfecto?

• 24
• 48
• 81
• 110

Multiple Choice

9²

• 81
• 100
• 80
• 72

Multiple Choice

8²

• 16
• 64
• 24
• 10

Multiple Choice

What is a square root?
¿Qué es una raíz cuadrada?

• A number to the second power
  

  Un número para la segunda potencia

• A square that has roots on it.
  

  Un cuadrado que tiene raíces en él

• A number divided by 2
  

  Un número dividido por 2

• Square roots are numbers that
  produce a specified quantity when multiplied by itself]
  Las raíces cuadradas son números que producir una cantidad específica cuando se multiplica por sí mismo

Multiple Choice

√196 = ______

• 14
• 14²
• 15
• 15²

Multiple Choice

√16

• 4
• 8
• 2
• 9

Multiple Choice

√121

• 12
• 10
• 11
• 3

Multiple Choice

√36

• 4
• 3
• 6
• 5

Multiple Choice

√36

• 3
• 18
• 6
• 7

Multiple Choice

√40 is between which two whole numbers? (integers)
¿Entre qué dos números enteros? (enteros)

• A. 5 and 6
• B. 6 and 7
• C. 7 and 8
• D. 39 and 41

Multiple Choice

solve for x

x² = 121

• 11

• 10

• 12

• 9

Multiple Choice

solve for x

x²= 36

• 5

• 4

• 7

• 6

Equation for Slope

y = mx + b

m = slope

b = y-intercept​

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Multiple Choice

What is the equation of a line when m = -3 and b = 5?

• y = -3x + 5

• y = -3x - 5

• y = 5x + 3

• y = -5x - 3

Multiple Choice

What is the equation of a line with a slope of 4 and a y-intercept of 2?

• y = -4x + 2

• y = -2x + 4

• y = 4x + 2

• y = 2x + 4

Multiple Choice

What is the slope in the equation:  y=4x+3

• 3
• 4x
• 4
• x

Multiple Choice

What is the y-intercept in the following equation:  y=-4x-5

• -4
• -4x
• 5
• -5

Multiple Choice

Write the equation for the line.

• y= -1x+3
• y= 4x+3
• y=1/4x+3
• y= -4x+3

Scientific Notation

A shorter way to write large numbers

Multiple Choice

7.82 x 10^-6 is an example of scientific notation. The exponent of -6 tells you your number will be very ________.

• Large
• Small
• Basic

Multiple Choice

Change from standard form to scientific notation: 12,000,000

• 12.0  x  10⁷
• 0.12  x  10⁷
• 1.2  x  10⁶
• 1.2  x  10⁷

Multiple Choice

Change from standard form to scientific notation:  450,000

• 4.5  x  10⁵
• 45  x  10⁵
• 4.5  x  10⁴
• 4.5  x  10⁶

Multiple Choice

Change from standard form to scientific notation:  0.000398

• 39.8  x  10^-5
• 3.98  x  10^-5
• 3.98  x  10^-4
• 39.8  x  10^-6

Multiple Choice

Change from standard form to scientific notation: 0.004078

• 4.078  x  10^-3
• 4.078  x  10³
• 40.78  x  10^-4
• .4078  x  10^-2

Real Numbers

Rational vs Irrational Numbers

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Multiple Choice

Which of the following numbers is irrational?

• √8
• ¾
• 2
• -1.325

Multiple Choice

Which of the following is rational?

• .211232112421125. . . .
• π
• √25
• √12

Multiple Choice

Which represents a rational number?

• √110
• √324
• √65
• √80

Multiple Choice

Which number is irrational?

• 9.6
• √45
• 3/8
• 3.4 x 10⁵