Here are some calculations for you.
Can you figure out the answers in your head?
No calculator allowed.
5 x 10  300 x 40  10 x 1000 
1 x 0.6  0.2 x 0.1  0.6 x 0.05 
21 ÷ 30  4 ÷ 0.1  16 ÷ 0.08 
Topics: Starter  Mental Methods  Place Value
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Previous Day  This starter is for 11 October  Next Day
5 x 10 = 50  300 x 40 = 12000  10 x 1000 = 10000 
1 x 0.6 = 0.6  0.2 x 0.1 = 0.02  0.6 x 0.05 = 0.03 
21 ÷ 30 = 0.7  4 ÷ 0.1 = 40  16 ÷ 0.08 = 200 
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