Here are some calculations for you.
Can you figure out the answers in your head?
No calculator allowed.
1 x 40  300 x 40  20 x 8000 
8 x 0.3  0.3 x 0.7  0.7 x 0.03 
63 ÷ 90  72 ÷ 0.9  10 ÷ 0.05 
Topics: Starter  Mental Methods  Place Value
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Previous Day  This starter is for 11 October  Next Day
1 x 40 = 40  300 x 40 = 12000  20 x 8000 = 160000 
8 x 0.3 = 2.4  0.3 x 0.7 = 0.21  0.7 x 0.03 = 0.021 
63 ÷ 90 = 0.7  72 ÷ 0.9 = 80  10 ÷ 0.05 = 200 
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