25 Math Review Part 1 Using a Calculator

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Presentation transcript:

25 Math Review Part 1 Using a Calculator

Calculator 3.141592654

Calculator

Calculator

Calculator

Calculator 256 28 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 256 2.67 or 21.5 ?

Calculator 1.591072968 2.67?

Calculator 2.828427125 21.5?

Math Review Squaring & Square & Cube Roots

Squaring & Square Roots

Square 22 = 2 x 2 = 4 42 = 4 x 4 = 16 1.752 = 1.75 x 1.75 = 3.0625 0.122 = 0.12 x 0.12 = 0.0144 Any Number 2 = Any Number x Any Number

Square Root 4 1/2 = 4 = 2 4 1/2 = 2 x 2 = 2 1.75 1/2 = ? X ? = ? 4 1/2 = 4 = 2 4 1/2 = 2 x 2 = 2 1.75 1/2 = ? X ? = ? 1.1 x 1.1 = 1.21 1.4 x 1.4 = 1.96 1.3 x 1.3 = 1.69

Square Root 1.75 1/2 = ? X ? = ? ……. 1.3 x 1.3 = 1.69 1.33 x 1.33 = 1.7689 1.325 x 1.325 = 1.755 1.324 x 1.324 = 1.752976 1.3235 x 1.3235 = 1.751 1.322875656

Square Root 1.75 1/2 = ? X ? = ? ……. 1.3 x 1.3 = 1.69 1.322875656 1.322875656 x 1.322875656 = 1.75

Cubing & Cube Roots

Cubed 23 = 2 x 2 x 2 = 8 43 = 4 x 4 x 4 = 64 1.753 = 1.75 x 1.75 x 1.75 = 5.359375 0.123 = 0.12 x 0.12 x 0.12 = 0.001728

Cubed 23 = 2 x 2 x 2 = 8 43 = 4 x 4 x 4 = 64 1.753 = 1.75 x 1.75 x 1.75 = 5.359375 0.123 = 0.12 x 0.12 x 0.12 = 0.001728

Cubed Any Number 3 = Any Number x Any Number x Any Number

Checking Cubes 0.123 = 0.12 x 0.12 x 0.12 = 0.001728 0.001728 ÷ 0.12 = 0.0144 0.0144 ÷ 0.12 = 0.12

Cube Root 3 8 1/3 = 8 = 80.33333 3 8 1/3 = 2 x 2 x 2 = 2 3 1.75 1/3 = ? X ? = ? 1.1 x 1.1 x 1.1 = 1.331 1.2 x 1.2 x 1.2 = 1.728 1.21 x 1.21 x 1.21 = 1.771561 OR

Cube Root 3 1.75 1/3 = 1.75 = 1.750.33333 1.75 .333333333 1.205071132

Cube Root 3 1.75 1/3 = 1.75 = 1.750.33333 1.205071132 x 1.205071132 x 1.205071132 = 1.452196433 x 1.205071132 = 1.749999999