Math Resources

Video Links for Lessons from Khan Academy

Whole Numbers

• Introduction to Whole Numbers

• Adding Whole Numbers

• Subtracting Whole Numbers

• Multiplying Whole Numbers

• Dividing Whole Numbers (no remainder)

• Dividing Whole Numbers (remainder)

Decimals

• Introduction to Decimals

• Adding Decimals

• Subtracting Decimals

• Multiplying Decimals

• Dividing Decimals

Fractions

• Introduction to Fractions

• Adding Fractions

• Subtracting Fractions

• Subtracting Mixed Fractions with Borrowing

• Multiplying Fractions

• Dividing Fractions

Solving Ratios

• Introduction to Ratios

• Solving Ratios

Percentages

• Finding a percent

• Percent of a whole number

• Percentage of a number using mental math*

Estimating through Rounding and Reasonableness

• Rounding to the nearest 10 and 100

• Estimating

• Reasonableness in answers*

Conversions

• Converting yards into inches

• Dimensional Analysis

Time

• Analog Clocks

• Analog Clocks to the minute

• Word Problems

Money

• Counting coins

• Making change by counting up*

• 3 methods of making change (not a video)

• Least amount of coins*

*Indicates a video not from Khan Academy

Learning Goals for CTC Math (all without a calculator)

Whole Numbers

Students will:

• • • Identify whole numbers

    • Add whole numbers

    • Subtract whole numbers

    • Multiply whole numbers

    • Divide whole numbers

    • Solve problems involving whole numbers in industry context

Decimals

Students will:

• • • Identify decimals

    • Add decimals

    • Subtract decimals

    • Multiply decimals

    • Divide decimals

    • Solve problems involving decimals in industry context

Fractions

Students will:

• • • Identify fractions

    • Add fractions

    • Subtract fractions

    • Multiply fractions

    • Divide fractions

    • Solve problems involving fractions in industry context

Solving Ratios

Students will:

• • • Understand what a ratio is

    • Write ratios in three different ways

    • Solve for a missing value with two equivalent ratios

    • Solve problems involving ratios in industry context

Percentages

Students will:

• • • Understand what a percentage is

    • Be able to switch between percentages and fractions

    • Be able to calculate a percentage without a calculator by use of reference values

Estimating through Rounding and Reasonableness

Students will:

• • • Be able to round numbers to a given place value

    • Be able to use rounding to find a reasonable estimate of a sum, difference, product or quotient

Conversions

Students will:

• • • Understand how to use dimensional analysis

    • Be able to convert between different units

Time

Students will:

• • • Understand the vocabulary involved with time

    • Be able to read an analog clock

    • Be able to do clock math

Money

Students will:

• • • Know the value of American coins

    • Be able to compute the correct change without a calculator

    • Be able to count back change correctly

Whole Numbers Answer Key Whole Numbers

Decimals Answer Key Decimals

Fractions Answer Key Fractions

Ratios Answer Key Ratios

Percentages Answer Key Percentages

Estimating Answer Key Estimating

Conversions Answer Key Conversions

Time Answer Key Time

Money Answer Key Money