There are 9 NRICH Mathematical resources connected to Rounding, you may find related items under The Number System and Place Value.
Broad Topics > The Number System and Place Value > Rounding
Reasoned Rounding
Age 7 to 14
Challenge Level
Four strategy dice games to consolidate pupils' understanding of rounding.
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?
Round the Dice Decimals 2
Age 7 to 11
Challenge Level
What happens when you round these numbers to the nearest whole number?
Round the Four Dice
Age 7 to 11
Challenge Level
This activity involves rounding four-digit numbers to the nearest thousand.
Rough Rectangle
Age 11 to 14 Short
Challenge Level
What is the smallest possible area that this rectangle could have?
Round the Three Dice
Age 7 to 11
Challenge Level
What happens when you round these three-digit numbers to the nearest 100?
Archimedes and Numerical Roots
Age 14 to 16
Challenge Level
The problem is how did Archimedes calculate the lengths of the sides of the polygons which needed him to be able to calculate square roots?
Route to Root
Age 16 to 18
Challenge Level
A sequence of numbers x1, x2, x3, ... starts with x1 = 2, and, if you know any term xn, you can find the next term xn+1 using the formula: xn+1 = (xn + 3/xn)/2 . Calculate the first six terms of this. . . .
NRICH is part of the family of activities in the Millennium Mathematics Project.