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Lesson details
Key learning points
- In this lesson, we will build on our knowledge of the 10 times table in order to estimate by rounding. We will do this to answer addition questions.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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5 Questions
Q1.
Which of these 3-digit numbers has 2 in the hundreds column?
199
2
20
Q2.
500 - 200 =
100
200
400
Q3.
456 - 111 =
400
444
546
Q4.
835 - 324 =
411
500
521
Q5.
Which of these is the odd one out?
333 - 111 =
423 - 200 =
500 - 400
5 Questions
Q1.
Which of numbers does not need to be rounded to the nearest 10?
44
56
6
Q2.
What is 27 rounded to the nearest 10?
20
270
28
Q3.
What is 523 rounded to the nearest 10?
500
521
530
Q4.
Round to estimate this answer 102 + 45 =
12
140
400
Q5.
What is 1999 rounded to the nearest 10?
1000
190
200