Rounding

There are 366 different Starters of The Day, many to choose from. You will find in the left column below some starters on the topic of Rounding.

A lesson starter does not have to be on the same topic as the main part of the lesson or the topic of the previous lesson. It is often very useful to revise and consolidate topic by using a starter based on a totally different topic. Some of the most popular starters are shown in the right column below.

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Rounding Starters:

Rounding 1dp: Round off the given numbers to 1 decimal place then add the answers together.

Rounding 2dp: Round off the given numbers to 2 decimal places then add the answers together.

Rounding Whole: Round off the given numbers to the nearest whole number then add the answers together.

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Hi-Low Predict

Similar to the 'Play Your Cards' right game.

Notes:

The objective of rounding is often to get a number that is easier to use, at the cost of making it less precise. This approximation is very important in dealing with answers to mathematical problems and making them relevant to the real world. Rounding to a given number of decimal places or significant figures is required of students.

See also the "Approximating" Starters. Once the principles of rounding have been understood, a fun way to practise the skills is to play "Rounding Snap".

Rounding Teacher Resources:

Rounding Snap: If the last card put down equals the previous card put down to the nearest whole number then all players race to shout SNAP!

Rounding Activities:

Rounding DP: A self marking exercise requiring students to round numbers to a given number of decimal places.

Rounding SF: A self marking exercise requiring students to round numbers to a given number of significant figures.

Rounding Snap: If the last card put down equals the previous card put down to the nearest whole number then all players race to shout SNAP!

Rounding Videos:

Rounding to decimal places: A straight forward explanation from SLEP

Rounding to significant figures: A straight forward explanation from SLEP

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