Here are some calculations for you.
Can you figure out the answers in your head?
No calculator allowed.
7 x 10  100 x 70  70 x 9000 
2 x 0.9  0.8 x 0.8  0.3 x 0.03 
14 ÷ 70  4 ÷ 0.4  24 ÷ 0.06 
Topics: Starter  Mental Methods  Place Value
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Previous Day  This starter is for 11 October  Next Day
7 x 10 = 70  100 x 70 = 7000  70 x 9000 = 630000 
2 x 0.9 = 1.8  0.8 x 0.8 = 0.64  0.3 x 0.03 = 0.009 
14 ÷ 70 = 0.2  4 ÷ 0.4 = 10  24 ÷ 0.06 = 400 
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