## Review Estimation and Mental Math

### If you get stuck, click here and find the highlighted lesson.

### Click the button when you are ready to begin.

#### (There are 17 lessons in this review.)

### Rounding Numbers: Practice

#### Round the number to the nearest ten.

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### Rounding Numbers: Practice

#### Round the number to the nearest hundred.

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### Rounding Numbers: Practice

#### Round the number to the nearest thousand.

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### Rounding Numbers: Practice

#### Round to the nearest ten-thousand.

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### Rounding Numbers: Practice

#### Round to the nearest hundred-thousand.

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### Round Decimals: Practice

#### Round to the nearest tenth.

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### Round Decimals: Practice

#### Round to the nearest hundredth.

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### Round Decimals: Practice

#### Round to the indicated precision.

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to the nearest

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### Estimating with Rounding: Practice

#### Estimate the sum by rounding the two numbers.

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+ | = |

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### Estimating with Rounding: Practice

#### Estimate the difference by rounding the two numbers.

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- | = |

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### Add with Front-End Estimation: Practice

#### Estimate the sum using Front-End Estimation

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+ is about

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### Subtract with Front-End Estimation: Practice

#### Estimate the difference using Front-End Estimation

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- is about

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### Estimating with Rounding: Practice

#### Estimate the sum by rounding the two numbers.

00:00

+ | = |

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### Estimating with Rounding: Practice

#### Estimate the difference by rounding the two numbers.

00:00

- | = |

Press the Start Button To Begin

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### Nearest Hour: Practice

#### What is the time to the nearest hour?

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### Nearest Half Hours: Practice

#### What is the time to the nearest half hour?

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### Nearest Quarter Hour: Practice

#### What is the time to the nearest quarter hour?

00:00

Hour:

Minutes:

Time=

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### Explore

#### Math Lessons by Grade

#### Math Topics

- Addition
- Algebra
- Comparing
- Counting
- Decimals
- Division
- Equations
- Estimation and Mental Math
- Exponents
- Fractions
- Geometry
- Measurement
- Money
- Multiplication
- Naming Numbers
- Patterns
- Percents and Ratios
- Place Value
- Properties
- Statistics
- Subtraction