Mathematics
21 Online
OpenStudy (anonymous):
Which answer correctly estimates the product of 20.21 × 999.801?
A.
about 20,000
B.
about 2,000
C.
about 200
D.
about 20
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OpenStudy (anonymous):
@Utterly_Confuzzled
OpenStudy (anonymous):
help plz
OpenStudy (utterly_confuzzled):
round 20.21 to 20 and 999.801 to 1000. 20*1000=??
OpenStudy (lizz123):
Round \[20.01\rightarrow 20.00\]
round \[999.801\rightarrow1000\]
OpenStudy (lizz123):
Now you have 20.00*1000=?
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OpenStudy (anonymous):
a
OpenStudy (lizz123):
Solve the problem and you will get your answer
OpenStudy (anonymous):
i have another one wait plz
OpenStudy (lizz123):
correct I got that too
OpenStudy (utterly_confuzzled):
Correct, A is the right answer
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OpenStudy (anonymous):
Which answer correctly estimates the quotient of 102.02 ÷ 4.011?
A.
about 25
B.
about 250
C.
about 2,500
D.
about 25,000
OpenStudy (lizz123):
\[102.02\rightarrow100.00\]
\[4.011\rightarrow4.000\]
OpenStudy (lizz123):
Divide that
OpenStudy (anonymous):
25
OpenStudy (lizz123):
Yes, you are correct. Do you still need help?
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OpenStudy (anonymous):
yes
OpenStudy (lizz123):
what is it
OpenStudy (anonymous):
Estimate the product of 15.217 × 9.54.
Round each number to the nearest whole number.
about ____________
OpenStudy (anonymous):
no
OpenStudy (utterly_confuzzled):
15.217 rounds to 15
9.54 rounds to 10
15x10 = ???
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OpenStudy (anonymous):
150
OpenStudy (anonymous):
Estimate the quotient of 719.711 ÷ 8.75.
Round the dividend and divisor to the nearest whole number.
about
OpenStudy (anonymous):
help me plz thank u
OpenStudy (anonymous):
last one thats it
OpenStudy (utterly_confuzzled):
719.711 rounds to 720
8.75 rounds to 9
720/9 =????
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OpenStudy (anonymous):
80
OpenStudy (anonymous):
thank u bye