Here are some calculations for you.
Can you figure out the answers in your head?
No calculator allowed.
5 x 20  200 x 90  60 x 2000 
6 x 0.4  0.2 x 0.2  0.8 x 0.08 
12 ÷ 20  10 ÷ 0.2  28 ÷ 0.04 
Topics: Starter  Mental Methods  Place Value
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Previous Day  This starter is for 11 October  Next Day
5 x 20 = 100  200 x 90 = 18000  60 x 2000 = 120000 
6 x 0.4 = 2.4  0.2 x 0.2 = 0.04  0.8 x 0.08 = 0.064 
12 ÷ 20 = 0.6  10 ÷ 0.2 = 50  28 ÷ 0.04 = 700 
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