Question 1

Estimate by rounding as indicated.
-An assembly line can produce 353 bicycles each hour. Estimate the number of bicycles produced in 17 hours by rounding the number of bicycles to the nearest hundred and the number of hours to the nearest ten. Also find the exact number of bicycles produced.

Accepted Answer

The answer of Estimate by rounding as indicated.
-An assembly line...

Question 2

Estimate by rounding as indicated.
-Lisa stashed in an envelope on her dresser $446 each week for 6 weeks. Estimate the total amount she saved by rounding the weekly amount to the nearest hundred. Also find the exact amount she saved.

Accepted Answer

The answer of Estimate by rounding as indicated.
-Lisa stashed in...

Question 3

Estimate by rounding as indicated.
-There are 27,878,400 square feet in one square mile. How many square feet are there in 33 square miles? Estimate by rounding the number of square feet in one square mile to the nearest ten million and the number of square miles to the nearest ten. Also find the exact answer.

Accepted Answer

Rounding 27,878,400 to the nearest ten million gives 30,000,000. Rounding 33 to the nearest ten gives 30. The estimate is 30,000,000 * 30 = 900,000,000 sq ft. The exact calculation is 27,878,400 * 33 = 919,987,200 sq ft.

Question 4

Solve by trial.
-$x+0=9$

Accepted Answer

The equation $x + 0 = 9$ simplifies to $x = 9$, making 9 the correct answer.

Question 5

Solve by trial.
-$ x+3=14$

Accepted Answer

The answer of Solve by trial.
-$ x+3=14$
...

Question 6

Solve by trial.
-$\mathrm{x}-4=13$

Accepted Answer

The answer of Solve by trial.
-$\mathrm{x}-4=13$
...

Question 7

Solve by trial.
-$y \cdot 3=0$

Accepted Answer

For the equation $y \cdot 3 = 0$, the only value of $y$ that satisfies this equation is $0$, because $0 \cdot 3 = 0$.

Question 8

Solve by trial.
-$y \cdot 2=12$

Accepted Answer

To solve $y \cdot 2 = 12$, divide both sides by 2 to find $y$. $y = 12 / 2 = 6$.

Question 9

Solve by trial.
-$54 \div \mathrm{n}=9$

Accepted Answer

$54 \div 6 = 9$, which satisfies the equation.

Question 10

Solve by trial.
-$72 \div \mathrm{n}=6$

Accepted Answer

To solve $72 \div \mathrm{n} = 6$, you can multiply both sides by $n$ to get $72 = 6n$, and then divide both sides by 6 to find $n = 12$.

Question 11

Solve.
-$x=3330+4208$

Accepted Answer

Adding 3330 and 4208 gives 7538.

Question 12

Solve.
-$x=40,283+11,926$

Accepted Answer

Adding the given numbers, $40,283 + 11,926 = 52,209$.

Question 13

Solve.
-$x=784-362$

Accepted Answer

Subtracting 362 from 784 gives 422, so the correct answer is A) 422.

Question 14

Solve.
-$7776-1772=x$

Accepted Answer

The answer of Solve.
-$7776-1772=x$
...

Question 15

Solve.
-$y=3 \cdot 8$

Accepted Answer

The correct answer is found by multiplying 3 by 8, which equals 24.

Question 16

Solve.
-$\mathrm{z}=49 \cdot 25$

Accepted Answer

Multiplying 49 by 25 gives 1225.

Question 17

Solve.
-$162 \div 2=q$

Accepted Answer

When you divide 162 by 2, the result is 81.

Question 18

Solve.
-$\mathrm{x}=144 \div 16$

Accepted Answer

$\mathrm{x}=144 \div 16 = 9$.

Question 19

Solve.
-$ x+3=28$

Accepted Answer

To solve for $x$, subtract 3 from both sides of the equation: $x + 3 - 3 = 28 - 3$, which simplifies to $x = 25$.

Question 20

Solve.
-$5+y=23$

Accepted Answer

The answer of Solve.
-$5+y=23$
...

Quiz 1: Whole Numbers

Estimate by rounding as indicated. -An assembly line can produce 353 bicycles each hour. Estimate the number of bicycles produced in 17 hours by rounding the number of bicycles to the nearest hundred and the number of hours to the nearest ten. Also find the exact number of bicycles produced.

Estimate by rounding as indicated. -Lisa stashed in an envelope on her dresser $446 each week for 6 weeks. Estimate the total amount she saved by rounding the weekly amount to the nearest hundred. Also find the exact amount she saved.

Solve by trial. - $x+0=9$

Solve by trial. - $x+3=14$

Solve by trial. - $\mathrm{x}-4=13$

Solve by trial. - $y \cdot 3=0$

Solve by trial. - $y \cdot 2=12$

Solve by trial. - $54 \div \mathrm{n}=9$

Solve by trial. - $72 \div \mathrm{n}=6$

Solve. - $x=3330+4208$

Solve. - $x=40,283+11,926$

Solve. - $x=784-362$

Solve. - $7776-1772=x$

Solve. - $y=3 \cdot 8$

Solve. - $\mathrm{z}=49 \cdot 25$

Solve. - $162 \div 2=q$

Solve. - $\mathrm{x}=144 \div 16$

Solve. - $x+3=28$

Solve. - $5+y=23$

Quiz 1: Whole Numbers

Estimate by rounding as indicated. -An assembly line can produce 353 bicycles each hour. Estimate the number of bicycles produced in 17 hours by rounding the number of bicycles to the nearest hundred and the number of hours to the nearest ten. Also find the exact number of bicycles produced.

Estimate by rounding as indicated. -Lisa stashed in an envelope on her dresser $446 each week for 6 weeks. Estimate the total amount she saved by rounding the weekly amount to the nearest hundred. Also find the exact amount she saved.

Solve by trial. - x+0=9x+0=9x+0=9

Solve by trial. - x+3=14 x+3=14x+3=14

Solve by trial. - x−4=13\mathrm{x}-4=13x−4=13

Solve by trial. - y⋅3=0y \cdot 3=0y⋅3=0

Solve by trial. - y⋅2=12y \cdot 2=12y⋅2=12

Solve by trial. - 54÷n=954 \div \mathrm{n}=954÷n=9

Solve by trial. - 72÷n=672 \div \mathrm{n}=672÷n=6

Solve. - x=3330+4208x=3330+4208x=3330+4208

Solve. - x=40,283+11,926x=40,283+11,926x=40,283+11,926

Solve. - x=784−362x=784-362x=784−362

Solve. - 7776−1772=x7776-1772=x7776−1772=x

Solve. - y=3⋅8y=3 \cdot 8y=3⋅8

Solve. - z=49⋅25\mathrm{z}=49 \cdot 25z=49⋅25

Solve. - 162÷2=q162 \div 2=q162÷2=q

Solve. - x=144÷16\mathrm{x}=144 \div 16x=144÷16

Solve. - x+3=28 x+3=28x+3=28

Solve. - 5+y=235+y=235+y=23