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Lesson details
Key learning points
- In this lesson, we will use known number facts in order to mentally add multiples of 10 to 3-digit numbers. We will look at partitioning strategies and analyse place value to make mental addition more efficient.
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.
Tick the 3-digit number below
12
33
99
Q2.
Which one of these shows a number bond to 20
18 + 1
20 + 5
6 + 16
Q3.
12 + 9 =
129
20
22
Q4.
222 + 7 =
227
272
300
Q5.
308 + 8 =
310
388
416
5 Questions
Q1.
Which one of these is a 3 digit number?
19
34
78
Q2.
674 + 20 =
1000
664
684
Q3.
654 + 30 = 694 True or false?
True
Q4.
520 + 80 =
580
700
800
Q5.
666 + 50 =
1000
675
676