Here are some calculations for you.
Can you figure out the answers in your head?
No calculator allowed.
3 x 20  200 x 10  90 x 2000 
3 x 0.1  0.6 x 0.5  0.8 x 0.08 
1 ÷ 10  3 ÷ 0.3  40 ÷ 0.08 
Topics: Starter  Mental Methods  Place Value
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Previous Day  This starter is for 11 October  Next Day
3 x 20 = 60  200 x 10 = 2000  90 x 2000 = 180000 
3 x 0.1 = 0.3  0.6 x 0.5 = 0.3  0.8 x 0.08 = 0.064 
1 ÷ 10 = 0.1  3 ÷ 0.3 = 10  40 ÷ 0.08 = 500 
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