One half is 1/2, which is 0.5 written as a decimal. 3 and (plus) 0.5 is 3.5.
So 3 and one half is written 3.5
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O.3 write as a decimal in the tenths
3/10 as a decimal is 0.3
To write 7 and 3 tenths as a decimal, you simply place the digit "3" in the tenths place after the decimal point. Therefore, 7 and 3 tenths written as a decimal is 7.3.
2/3 = 2 ÷ 3 = 0.6667 in decimal
0.30.