L.O. Round any number up to 1 000 000 to the nearest 10, 100,
1000, 10 000 and 100 000
1)
Circle all the numbers which give 70 000 when rounded to the nearest 10 000
75 428
2)
6825
63 947
65 025
73 196
Complete the table.
Rounded to the nearest
100
Rounded to the nearest
1000
Rounded to the nearest
10 000
Rounded to the nearest
100 000
348 217
245 504
85 498
9484
3)
What is the largest whole number which rounded to the nearest 100 000 gives 200 000?
What is the smallest whole number which rounded to the nearest 100 000 gives 200 000?
4)
Adam wants to know how many people watched England’s last three football games at
Wembley. The attendances were:
48 570
65 093
58 487
He begins by finding an approximate answer. He rounds the numbers to the nearest 10 000
and then adds them.
What is his approximate answer?
5)
The difference between two numbers is 10.
When one of the numbers is rounded to the nearest 1000 it gives an answer of 4000.
When the other number is rounded to the nearest 1000 it gives an answer of 5000.
What could the two numbers be?
and
Round any number up to 1 000 000 to the nearest 10, 100, 1 000,
10 000 and 100 000
Teacher’s notes
Answers:
Rounded to
the nearest
100
Rounded to
the nearest
1000
Rounded to
the nearest
348,217
348 200
348 000
350 000
300 000
245,504
245 500
246 000
250 000
200 000
85,498
85 500
86 000
90 000
100 000
9,484
9500
9000
10 000
0
2)
1) 65 025 & 73 196
3) 249,999, 150,000
4) 180,000
5) 4495, 4505
(other answers exist - one must
be less than 4500, the other
more than 4500 and they must
have a difference of 10)
10 000
Rounded to
the nearest
100 000
Useful interactive games to teach the skills needed for rounding:
http://mathsframe.co.uk/en/resources/resource/53/rounding
Uses a number line to help children think about place value and
rounding. Choose to round whole numbers or decimals.
http://mathsframe.co.uk/en/resources/resource/238/Rounding_Answers
Perform a calculation on a calculator and then round the answer to a
given degree of accuracy. Choose to round whole numbers or decimals.
http://mathsframe.co.uk/en/resources/resource/275/Rounding_Crystal_Crash
Throw your pickaxe at the correct answer and clear the cave of crystals. Lots
of choice over level. Levels are linked to the new maths curriculum.
http://mathsframe.co.uk/en/resources/resource/289/
KS2_Maths_Invaders
Shoot the spaceship with the correct answer. Lots of choice over level.
Levels are linked to the new maths curriculum.
http://mathsframe.co.uk/en/resources/resource/290/
Snake_KS2_Maths_Game
Guide the snake to the correct answer. Lots of choice over level. Levels are
linked to the new maths curriculum.