Which decimal number is greater?
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Which decimal number is greater?
Let's first convert the decimal numbers into simple fractions and compare them:
0.77 is divided by 100 because there are two digits after the decimal point, therefore:
0.7 is divided by 10 because there is only one digit after the decimal point, therefore:
Let's compare the numbers in the numerator:
Therefore, the larger number is 0.77.
Which decimal number is greater?
You're thinking of whole numbers, not decimals! In decimals, 0.7 means 7 tenths while 0.77 means 77 hundredths. Convert to compare: and , so 77 > 70.
Add trailing zeros to make them the same length! Compare 0.70 vs 0.77 - now you can clearly see that 70 hundredths < 77 hundredths.
No! The decimal point changes everything. Without it, you'd compare 7 vs 77, but with the decimal point, you're comparing 0.7 vs 0.77, which is completely different.
Count the decimal places:
Yes! Line up the decimal points and add zeros to make equal lengths. Then compare digit by digit from left to right, just like counting: 0.70 vs 0.77 → 7 = 7, then 0 < 7, so 0.70 < 0.77.
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