MATHS - Numbers - Approximation and Estimation

The video tutorial covers approximation and estimation, focusing on rounding as a key skill. It explains how approximation involves using values that are similar but not exact, often by rounding to make calculations easier. The tutorial provides examples and practice problems, emphasizing the importance of context in approximation. It also introduces estimation, using approximation to simplify values for easier calculations, and demonstrates how to achieve integer results without a calculator.

What is the main purpose of rounding in approximation?

• To make values more complex

• To make values easier to work with

• To increase the precision of values

• To use a calculator more effectively

If you have a value of 49 pounds, what would be the rounded approximation according to the rule of thumb?

• 48 pounds

• 51 pounds

• 50 pounds

• 49 pounds

In the example of a journey of 18.8 kilometers, what is the final approximated distance used for calculation?

• 19 kilometers

• 21 kilometers

• 18 kilometers

• 20 kilometers

What is the purpose of estimation in calculations?

• To ensure exact answers

• To avoid using any approximations

• To simplify values for easier calculations

• To make values more difficult to use

In the example problem, what is the integer result of 49 divided by 7?

• 6

• 7

• 8

• 9