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3 years ago

10

Describe how to round 678 to the nearest hundred

2 answers:

gavmur [86]3 years ago

7 0

First you look at rhe number to the right of the number being rounded to . So in your case, the number you look at is 7. Sins0ce 7 is more than 5, you round the 6 up so it becomes 7 and your digits after the 6 (now a 7) become Zeros. So your final answer is 700

Kryger [21]3 years ago

5 0

The answer is to the problem 700

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mixas84 [53]

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1. $\frac{10^{15}}{10^3} =10^{15-3} = 10^{12}$

2. $\frac{(-3)^4}{(-3)^{-3}} =(-3)^{4-(-3)}=(-3)^{4+3} = (-3)^7$

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This is one of the ways you could have done it

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[More information with exponents]

If you multiply an exponent directly with another exponent, you multiply the exponents together

For example:

$(x^{2})^4=x^{2(4)}=x^8$

$(x^{3})^5 =x^{3(5)}=x^{15}$

If you multiply a variable with an exponent by a variable with an exponent, you add the exponents

For example:

$(x^{2}) (x^6)=x^{2+6}=x^8$

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3 years ago

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