Number (addition and subtraction): Leaping Lemurs

1 - Learning Objective

Challenge level ⭐⭐

(designed for children with prior knowledge of the Year 3 and Year 4 programme of study)

Learning Objective

We are learning how to solve a natural world problem by using and applying our skills and knowledge of number, addition and subtraction.

Useful prior knowledge:

  • To add together several single and double digit numbers using efficient mental strategies

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Credit: BBC Two - Earth's Tropical Islands

Clip Description

Madagascar is home to the world’s entire lemur population. With an estimated 112 different species, these fascinating primates come in all shapes and sizes. The mouse lemur is the smallest of all, weighing just 30 grams. The indri is the largest and weighs around 8 kilograms.

Sadly, the majority of lemur species are critically endangered. This means that they could soon become extinct. The main threat to their existence is deforestation. (Madagascar has lost almost half of its forests within the last 60 years.) Other threats come from illegal hunting and global warming.

Quick Whiteboard Challenge

We have learnt that there are an estimated 112 species of lemur in Madagascar.

Using all or just some of the following numbers, can you make a target number of 112?

(You can add, subtract, multiply or divide any of the numbers above to reach this target. However, you can only use each number once!)