790
The answer is 790.
The first question we must answer is, "which digit in this number is in the tens column?"
In 789, the digit "8" is in the tens column.
We know this because working from right to left (from the left of the decimal point) it is in the second column ("9" is in the first, "7" in the third). We do not always write a decimal point for a number such as this but if it makes it any easier for you then think of this number as being 789.0.
Now to round this digit we ask, "is the digit to its immediate right higher than or equal to 5?"
If it is then we round up else we round down (i.e. do not change the digit).
In this case, "9" is higher than "5" so we must round up. The number 789 becomes 790 (to the nearest ten). Please note that as we have rounded to the nearest 10, we must make the last digit 0 after rounding.
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It is 790
I don’t know the answer
780,770, 790, 800
678
800
790
766
800
1000
To one significant number, 800
10.00
0
To the nearest ten, 790 To the nearest hundred, 800
789.322 when rounded off to the nearest number is 789.
0
To the nearest hundred thousand, 100000
8 is already rounded to the nearest 10th. Rounded to the nearest 10 is 10.
10
149,100,000, rounded to the nearest 10 million = 150,000,000149,100,000, rounded to the nearest 10 million = 150,000,000149,100,000, rounded to the nearest 10 million = 150,000,000149,100,000, rounded to the nearest 10 million = 150,000,000