Conjecturing and generalising

There are 405 NRICH Mathematical resources connected to Conjecturing and generalising

$What Could \It Be?$

problem

Favourite

What could it be?

Age

5 to 7

Challenge level

In this calculation, the box represents a missing digit. What could the digit be? What would the solution be in each case?

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Multiply multiples 3

Age

7 to 11

Challenge level

Have a go at balancing this equation. Can you find different ways of doing it?

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Round the dice decimals 1

Age

7 to 11

Challenge level

Use two dice to generate two numbers with one decimal place. What happens when you round these numbers to the nearest whole number?

problem

Favourite

Round the three dice

Age

7 to 11

Challenge level

What happens when you round these three-digit numbers to the nearest 100?

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Round the two dice

Age

5 to 7

Challenge level

This activity focuses on rounding to the nearest 10.

problem

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Round the dice decimals 2

Age

7 to 11

Challenge level

What happens when you round these numbers to the nearest whole number?

problem

Favourite

Round the four dice

Age

7 to 11

Challenge level

This activity involves rounding four-digit numbers to the nearest thousand.

problem

Favourite

Multiply multiples 2

Age

7 to 11

Challenge level

Can you work out some different ways to balance this equation?

problem

Favourite

Multiply multiples 1

Age

7 to 11

Challenge level

Can you complete this calculation by filling in the missing numbers? In how many different ways can you do it?

problem

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Two spinners

Age

5 to 7

Challenge level

What two-digit numbers can you make with these two dice? What can't you make?

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Conjecturing and generalising

What could it be?

Multiply multiples 3

Round the dice decimals 1

Round the three dice

Round the two dice

Round the dice decimals 2

Round the four dice

Multiply multiples 2

Multiply multiples 1

Two spinners