Here are some calculations for you.
Can you figure out the answers in your head?
No calculator allowed.
5 x 80  100 x 70  70 x 3000 
8 x 0.9  0.9 x 0.7  0.8 x 0.03 
48 ÷ 60  1 ÷ 0.1  28 ÷ 0.07 
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Topics: Starter  Mental Methods  Place Value
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Previous Day  This starter is for 11 October  Next Day
5 x 80 = 400  100 x 70 = 7000  70 x 3000 = 210000 
8 x 0.9 = 7.2  0.9 x 0.7 = 0.63  0.8 x 0.03 = 0.024 
48 ÷ 60 = 0.8  1 ÷ 0.1 = 10  28 ÷ 0.07 = 400 
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