3.
What is 0.72 written as a simplified fraction? (1 point)
72/100
100/72
36/50
18/25
4.
Ms. Johnson’s class is having a pizza party. If there are 14 students and 7 pizzas cut into 8 slices, what answer choice represents the fraction of one pizza that each student receives? (1 point)
1/3
1/4
1/2
1/8
5.
What makes the statement true? 7^-2 = ? (1 point)
49
1/49
14
1/14
6.
In 2009, the total population of North Carolina was 2,890,425 people. What was this population in scientific notation, approximately? (1 point)
2.9 × 10^5
2.9 × 10^6
2.9 × 10^7
29 × 10^7
7.
What is the solution to (4 × 10^3) x (6 × 10^6) written in scientific notation? (1 point)
24 × 10^9
2.4 × 10^9
24 × 10^18
2.4 × 10^10
8.
If there is 1/6 of a cake, and Mitchell only wants 3/12 of it, how much cake does he want? (1 point)
1/6
4/18
1/24
3/18
9.
James bought 5 Basketball cards at a garage sale for $0.65 each. He sold them to a collector for $2.25 each. What was his profit? (1 point)
$3.25
$8.00
$11.25
$14.50
10.
What is 0.00000512 in scientific notation? (1 point)
5.12 × 10^6
512 × 10^5
5.12 × 10^-6
512 × 10^-5
11.
What is 27/6 written as a decimal? (1 point)
4.2
4.3
4.4
4.5
12.
The table below shows the populations of four countries for the year 2006 expressed in scientific notation.
Population in 2006
Country
Lebanon 3.90 × 10^6
Mexico 1.08 × 10^8
Peru 2.84 × 10^7
Spain 4.55 × 10^7
Of the countries listed, which one had the largest population in 2006?
(1 point)
Lebanon 3.90 x 10^6
Mexico 1.08 x 10^8
Peru 2.84 x 10^7
Spain 4.55 x 10^7
Lebanon
Mexico
Peru
Spain
13.
What is 3.56 × 10^-5 in standard form? (1 point)
356,000
3,560,000
0.00356
0.0000356
14.
Which of the following appears to be an irrational number? (1 point)
0.404404440…
0.783783783…
-4/15
square root of 36
15.
Which number is equivalent to 0.45? (1 point)
1/45
5/11
4/5
1/4
16.
Ben spent 5/8 of a foot of plywood. To finish building the deck he needs five times that amount. How many feet of plywood does josh need? (1 point)
0.6
0.7
0.16
0.17
17.
Josh has 5/8 of a foot of plywood. To finish building the deck, he needs five times that amount. How many feet of plywood does Josh need? (1 point)
3 feet
3 1/2 feet
3 1/8 feet
3 2/9 feet
18.
-1/6 + ( -3/7) = (1 point)
-25/42
-4/13
11/42
2/13
19.
8/9 + (-3/4)= (1 point)
11/13
5/36
-24/36
1
20.
10 5/18 – 8 5/6= (1 point)
2 5/9
2 13/18
1 4/9
1 11/18
21.
1/6 x -2/3 (1 point)
1/9
1/3
-1/3
-1/9
22.
2/5 ÷ 9/10 = (1 point)
2/5
4/5
2/9
4/9
23.
A length of ribbon is 3 1/2 yd long. How many pieces 1 5/9 yd long can Joy cut from the length of ribbon? (1 point)
1
2
3
4
24.
1 2/5 ÷ 2 1/3 = (1 point)
1 1/12
1 1/5
3/5
3 4/15
please help i don't wanna fail this test cause my mom will kill me
Ms.sue
That was really mean he he/she needed help as a teacher you should help not be rude
mrs sue i dont have a mom so why dont u shut up
what's the point in studying if we ain't even gonna use this stuff in real life.
Ms sue just stop being rude god. like stop all you gotta do is help "-"
I'll do my best to help you out! Let's go through each question one by one.
3. To write 0.72 as a simplified fraction, we can convert it to a fraction with a denominator of 100. So the answer is 72/100.
4. To find the fraction of one pizza that each student receives, we need to divide the total number of slices by the total number of students. There are 7 pizzas with 8 slices each, so a total of 7 * 8 = 56 slices. Since there are 14 students, each student receives 1/56th of a pizza. Therefore, the answer is 1/56.
5. To find the value of 7^-2, we need to take the reciprocal of 7^2, which is 1/7^2. Simplifying, we get 1/49.
6. To express 2,890,425 in scientific notation, we move the decimal point to the left until there is only one digit before the decimal point. We get 2.890425 × 10^6.
7. To multiply numbers in scientific notation, we multiply the coefficients and add the exponents. Therefore, the solution to (4 × 10^3) x (6 × 10^6) is 24 × 10^9.
8. Mitchell wants 3/12 of 1/6 of a cake. To find the desired amount, we multiply 1/6 by 3/12: (1/6) * (3/12) = 3/72. Simplifying, we get 1/24.
9. To calculate James's profit, we subtract the cost from the selling price. James bought 5 basketball cards for $0.65 each, so the cost was 5 * $0.65 = $3.25. He sold them for $2.25 each, so the selling price was 5 * $2.25 = $11.25. Therefore, his profit was $11.25 - $3.25 = $8.00.
10. To write 0.00000512 in scientific notation, we move the decimal point to the right until it lies between 5.12 and the next significant digit (between 5 and 1). We get 5.12 × 10^-6.
11. To convert 27/6 to a decimal, we perform the division 27 ÷ 6. The quotient is 4.5.
12. To compare the populations of the given countries, we compare the coefficients of their scientific notations. The country with the largest population is Mexico, with a population of 1.08 × 10^8.
13. To convert 3.56 × 10^-5 to standard form, we move the decimal point to the right until it lies directly after the 3. We get 0.0000356.
14. An irrational number is a number that cannot be expressed as a fraction. None of the given options appear to be irrational numbers. The square root of 36 is a rational number because it can be expressed as 6.
15. The number 0.45 is equivalent to the fraction 45/100, which can be simplified to 9/20.
16. If Ben spent 5/8 of a foot of plywood, and he needs five times that amount to finish building the deck, then Josh needs 5 * (5/8) = 25/8 or 3 1/8 feet of plywood.
17. If Josh has 5/8 of a foot of plywood and needs five times that amount, Josh needs 5 * (5/8) = 25/8 or 3 1/8 feet of plywood.
18. To add fractions, the denominators must be the same. In this case, the denominators are 6 and 7, so we need to find a common denominator, which is 42. Therefore, -1/6 + (-3/7) = (-7/42) + (-18/42) = -25/42.
19. To add fractions, the denominators must be the same. In this case, the denominators are 9 and 4, so we need to find a common denominator, which is 36. Therefore, 8/9 + (-3/4) = 32/36 + (-27/36) = 5/36.
20. To subtract mixed numbers, we first convert them to improper fractions. Then, we find a common denominator, which in this case is 18. Finally, we subtract the fractions and simplify if necessary.
21. To multiply fractions, we multiply the numerators together and multiply the denominators together. Therefore, (1/6) * (-2/3) = (-1/2) * (1/3) = -1/6.
22. To divide fractions, we multiply the first fraction by the reciprocal of the second fraction. Therefore, (2/5) ÷ (9/10) = (2/5) * (10/9) = 20/45. Simplifying, we get 4/9.
23. To find the number of pieces of length 1 5/9 yards from a ribbon that is 3 1/2 yards long, we perform the division 3 1/2 ÷ 1 5/9. The quotient is 2.
24. To divide mixed numbers, we first convert them to improper fractions. Then, we multiply the first fraction by the reciprocal of the second fraction. Finally, we simplify if necessary. Therefore, (1 2/5) ÷ (2 1/3) = (7/5) ÷ (7/3) = (7/5) * (3/7) = 3/5.
You appear not to have tried on any of these, but I'll throw you a freebie.
1 2/5 ÷ 2 1/3 = 7/5 ÷ 7/3 = 7/5 * 3/7 = 3/5
Good for your mom. What would she think if she knew you were trying to cheat??
We are TEACHERS, not CHEATERS. We do not knowing give test answers!
Try studying!