Here are some calculations for you.
Can you figure out the answers in your head?
No calculator allowed.
1 x 70  100 x 80  90 x 4000 
5 x 0.7  0.5 x 0.5  0.1 x 0.08 
16 ÷ 40  4 ÷ 0.2  9 ÷ 0.01 
Topics: Starter  Mental Methods  Place Value
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Previous Day  This starter is for 11 October  Next Day
1 x 70 = 70  100 x 80 = 8000  90 x 4000 = 360000 
5 x 0.7 = 3.5  0.5 x 0.5 = 0.25  0.1 x 0.08 = 0.008 
16 ÷ 40 = 0.4  4 ÷ 0.2 = 20  9 ÷ 0.01 = 900 
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