I am leaning to solve Addition and Subtraction using place value at level 2
1.
There are 21 people at a beach, and 13 more people arrive.
Show how to work out how many people are at the beach altogether
10 + 20 = 30 3+1= 4 ( Place Value )
30 + 4 = 34 ✔ YES Sefesi, this is great!
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2
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Two classes go on camp together. One class has 47 students and the other has 38.
Show how to work out how many students go on camp
40 + 30 = 70 --- 47 + 38 = ?
8 + 7 = 15
70 + 15 = 85 ✔
The answer is correct. Your next step is to use another strategy.
Can you see another easy way?
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3. A farmer has 63 cows. He buys 39 more cows.
Show how to work out how many cows he has altogether.
63 + 39 =
60 + 30 = 90
3 + 9 = 12
90 + 12 = 102
Same thing with this one. Can you see a different way. It will be easier.
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