to multiply 2 digit numbers together you would firstly set out a solider sum like this
34
x 47
then you would do the 7 column like normal
34
47
221
then for the 4 column you would add a magic 0 to the end like then add up 221 and 1360 and u would get 1581
34
47
221
1360
1581
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You can multiply to numbers with decimals
1. Find out which numbers multiply together to reach the target number, then find out which numbers multiply together to make the numbers that multiply together to reach the target number.
It depends on whether you want multiply or sum!
To multiply two digit decimal numbers, multiply the numbers as you would without the decimals. To put the decimal in the answer, count the number of decimal places in the two numbers and put the decimal in the answer that many places to the left. For example: 5.12 x 6.35 = 32.5120. If the numbers were 51.2 x 63.5, the answer would be 3251.20.
68 = 2x34 4x17