### Rounding numbers using a number line

In this lesson, we will learn how to use a number line to decide when to round up or down.

Skip navigation# Unit Overview: Accuracy and estimation

## Lessons:

### Rounding numbers using a number line

### Rounding from a calculator: Approximating

### Rounding to significant figures (Part 1)

### Rounding to significant figures (Part 2)

### Rounding and Range

### Upper and Lower Bound

### Solving Problems with Rounding

### Estimation

8 lessons

In this lesson, we will learn how to use a number line to decide when to round up or down.

In this lesson, we will learn about approximation and how to use that to approximate answers to calculations.

In this lesson, we will be introduced to significant figures and understand the concept of degrees of accuracy. We will also learn how to round whole numbers to a given significant figure.

In this lesson, we will learn how to round decimal numbers to a given significant figure.

In this lesson, we will learn about range when it comes to rounding numbers. We will investigate what range a number could be in based upon how it was rounded.

In this lesson, we will learn what upper and lower bound mean and how this links with range.

In this lesson, we will learn how to solve problems working with lower and upper bounds to find maximum and minimum values.

In this lesson, we will learn how to estimate and solve problems using estimation.

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