Decimal Values
Which numbers have a digit in the ones place that is 1/10 the value of the digit in the tens place? Choose all that apply.
3,022
9,228
2,404
2,744
6,222
3,022
2,744
6,222
Use >, <, or = to compare.
5.090 5.09
=
Round 5.027 to the nearest hundredth.
5.03
What is four million, six hundred twenty-five thousand, twenty-two in standard form?
4,625,022
8.022 is 1/10 of 80.22
Explain why.
The number 8.022 is shifted to the right one place value position from 80.22, therefore it is 1/10 less.
Matthew says that this is a true statement. Is he correct? If not, explain his misconception (what he misunderstood) and why he is not correct.
2.05 = 2.5
Matthew is incorrect. Matthew thought that since there was a 0 in the problem, that the decimals had to be equal. What he did not realize was that the 0 had to be at the end of the deicmal.
If you look at the tenths place, the first decimal has a 0 while the second decimal has a 5. Therefore, 2.05 < 2.5
Round 6.789 to the nearest tenth.
6.8
What is the number name for 45,890,563?
forty-five million, eight hundred ninety thousand, five hundred sixty-three.
Moving right, each 7 is 1/10 or 10 times less than the 7 next to it.
Write these decimals in order from least to greatest.
4.09
4.009
4.9
40.9
4.009 ; 4.09 ; 4.9 ; 40.9
Round 0.999 to the nearest tenth.
1.0
What is (4 x 102) + (8 x 101) + (2 x 1/10) + (7 x 1/1000) in standard form?
480.207
Complete the sentences to make true statements.
1. 0.09 is 10 times __________
2. 9 is 100 times ___________
3. 0.9 is 1/100 of ________
1. 0.009
2. 0.09
3. 90
Put these decimals in order from greatest to least.
8.45
8.5
8.045
8.445
8.5 ; 8.45 ; 8.445 ; 8.045
A grocery store bill was $234.89. Pauline said that round to the nearest whole, she spent about $234. Is she correct? Why or why not?
Pauline is incorrect. The 8 in the tenths place would change the 4 in the ones place to a 5, making it $235.
Write (4 x 1000) + (5 x 100) + (8 x 10) + (3 x 1/10) in standard from.
4,580.3
600 students
Sally says that 8.29 is greater than 8.5 because 29 is a greater number than 5. Is she correct? If not, please explain.
She is not correct. If you compare the tenths place, you can see that 2 is less than 5, so 8.5 is the greater decimal.
or
She is not correct. If you add a 0 to the end of each decimal, you can compare 29 and 50 and see that 29 is less than 50. Therefore 8.5 is the greater decimal.
Possible answers:
7.180 7.175
7.181 7.176
7.182 7.177
7.183 7.178
7.184 7.179
7.184
The weight of a paperback book is 2.045 ounces. What is this written in expanded form? Write it out using fractions, not decimals.
(2 x 1) + (4 x 1/100) + (5 x 1/1000)