Here are some calculations for you.
Can you figure out the answers in your head?
No calculator allowed.
2 x 40  400 x 20  10 x 7000 
5 x 0.5  0.9 x 0.5  0.8 x 0.03 
16 ÷ 40  36 ÷ 0.9  18 ÷ 0.09 
Topics: Starter  Mental Methods  Place Value
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Previous Day  This starter is for 11 October  Next Day
2 x 40 = 80  400 x 20 = 8000  10 x 7000 = 70000 
5 x 0.5 = 2.5  0.9 x 0.5 = 0.45  0.8 x 0.03 = 0.024 
16 ÷ 40 = 0.4  36 ÷ 0.9 = 40  18 ÷ 0.09 = 200 
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