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# Unit: Numbers and operations

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### About this unit

You already know lots of types of numbers, like integers, decimals, and fractions. You also can use several operations, like subtraction and absolute value. Let's learn about another type of numbers, irrational numbers, and deepen our understanding of the power operation.### Learn

### Practice

- Writing fractions as repeating decimalsGet 5 of 7 questions to level up!
- Converting repeating decimals to fractionsGet 5 of 7 questions to level up!
- Converting multi-digit repeating decimals to fractionsGet 3 of 4 questions to level up!

### Learn

### Practice

- Square rootsGet 5 of 7 questions to level up!
- Cube rootsGet 5 of 7 questions to level up!
- Equations with square roots & cube rootsGet 3 of 4 questions to level up!
- Roots of decimals & fractionsGet 3 of 4 questions to level up!
- Equations with square roots: decimals & fractionsGet 3 of 4 questions to level up!
- Square and cube challengeGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 720 Mastery points

### Learn

### Practice

- Classify numbers: rational & irrationalGet 5 of 7 questions to level up!
- Classify numbersGet 5 of 7 questions to level up!

### Learn

### Practice

- Approximating square rootsGet 3 of 4 questions to level up!
- Comparing irrational numbersGet 5 of 7 questions to level up!
- Comparing irrational numbers with a calculatorGet 5 of 7 questions to level up!

Level up on the above skills and collect up to 400 Mastery points

### Learn

### Practice

- Exponents with integer basesGet 5 of 7 questions to level up!
- Exponents with negative fractional basesGet 3 of 4 questions to level up!
- Signs of expressions challengeGet 3 of 4 questions to level up!

### Learn

### Practice

- Multiply powersGet 3 of 4 questions to level up!
- Powers of powersGet 3 of 4 questions to level up!
- Divide powersGet 3 of 4 questions to level up!
- Powers of products & quotientsGet 3 of 4 questions to level up!

### Learn

### Practice

- Negative exponentsGet 3 of 4 questions to level up!

### Learn

### Practice

- Multiply & divide powers (integer exponents)Get 5 of 7 questions to level up!
- Powers of products & quotients (integer exponents)Get 3 of 4 questions to level up!

Level up on the above skills and collect up to 800 Mastery points

### Learn

### Practice

- Multiplication and division with powers of tenGet 5 of 7 questions to level up!
- Approximating with powers of 10Get 3 of 4 questions to level up!

### Learn

### Practice

- Multiplying & dividing in scientific notationGet 3 of 4 questions to level up!
- Adding & subtracting in scientific notationGet 3 of 4 questions to level up!

### Learn

### Practice

- Scientific notation word problemsGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 480 Mastery points

Up next for you:

Level up on all the skills in this unit and collect up to 3000 Mastery points!