(b)
Work out the value of
3 x 10 x 40 000 000
Give your answer in standard form,

3 * 10 = 30

30 * 40,000,000 = 1,200,000,000

ONE BILLION TWO HUNDRED MILLION

Multiply 3 times 10 first, then 30 times 40,000,000 and you get 1,200,000,000

Hope this helps ^-^

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