Question 1

Simone has $220.00 with her. She goes shopping for some computer supplies. She spends $34.35 for printer ink cartridges, $14.96 for two reams of ink jet paper, $9.95 for two cans of
Canned air, $11.99 for a CD rack and $143.99 for three software programs. How much does
She spend? Does she have enough left to stop off for a $4.59 hamburger meal on the way
Home?

Accepted Answer

To find the total amount spent, add all the expenses: $34.35 + $14.96 + $9.95 + $11.99 + $143.99 = $215.24. Subtracting this from $220.00 leaves $4.76, which is enough for the $4.59 hamburger meal.

Question 2

A music CD costs $9.99. How much change would you receive if you paid with a twenty-dollar bill?

Accepted Answer

The change received would be $20.00 - $9.99 = $10.01.

Question 3

Estimate answer by rounding numbers to the nearest ten. Then find the exact answer. A welder uses 88 welding rods for his first job and 19 welding rods for a second job. How many more rods did he use for the first job?

Accepted Answer

Rounding to the nearest ten, 88 rounds to 90 and 19 rounds to 20. The estimated difference is 90 - 20 = 70 rods. The exact difference is 88 - 19 = 69 rods.

Question 4

Estimate the sum by rounding to the nearest whole number: 2.78 + 8.48

Accepted Answer

Rounding to the nearest whole number, 2.78 rounds to 3 and 8.48 rounds to 8. Adding these together gives 3 + 8 = 11.

Question 5

Multiply: 237 × 702

Accepted Answer

The product of 237 and 702 is 166,374.

Question 6

Subtract: 1,536 - 1,232

Accepted Answer

We subtract the digits in each place value:
6-2=4
3-3=0
5-2=3
1,536 - 1,232 = 304

Question 7

Divide: 8,512 ÷ 28

Accepted Answer

8,512 divided by 28 equals 304.

Question 8

Multiply: 403 × 27

Accepted Answer

To multiply two numbers, we usually use the traditional method of multiplication, which involves multiplying each digit of the second number by every digit of the first number and then adding the products.

In this case, we can start by multiplying 403 by the units digit of 27, which is 7:

403
  ×  27
   ------
    2821

Next, we multiply 403 by the tens digit of 27, which is 2, but shifted one place to the left:

403
   × 27
   ------
    2821
   12090

Finally, we add these two products to get the final result:

403
   × 27
   ------
   10881

Therefore, the answer is A) 10,881.

Question 9

Subtract and check your 2,155 - 919

Accepted Answer

When we subtract 919 from 2,155, we get 1,236. To check our answer, we can add 919 to 1,236, which gives us 2,155. Therefore, the correct choice is B.

Question 10

Perform the indicated operations without a calculator: $$462 / 14 =$$

Accepted Answer

To solve this problem without a calculator, we can use long division. Start by dividing the first digit of the dividend (4) by the divisor (14). Since 4 is less than 14, we look at the first two digits instead (46). 14 goes into 46 three times, with a remainder of 4. We bring down the next digit (2) to create a new dividend of 42. 14 goes into 42 three times, with no remainder. Therefore, the quotient is 33.

Question 11

Estimate the quotient by rounding the divisor and dividend to numbers with one nonzero digit. Find the exact value.

Accepted Answer

The answer of Estimate the quotient by rounding the divisor...

Question 12

Subtract: 5.9 from 14.8

Accepted Answer

Subtracting 5.9 from 14.8 gives 14.8 - 5.9 = 8.9.

Question 13

A small office manager wants to buy new cordless phones for each of the office's 11 desks. Each phone costs $89.99. Estimate the total cost by using numbers with one nonzero digit.
Find the exact amount.

Accepted Answer

Using numbers with only one nonzero digit, we can estimate $89.99$ as $90$. Therefore, the total cost of 11 phones is approximately $11 	imes 90 = 990$. The only option that comes close to this estimate is A: $900; $989.89. However, we can find the exact amount by multiplying 11 by 89.99: $11 	imes 89.99 = 989.89$. So the exact amount is $989.89$, which matches option A.

Question 14

A computer chip manufacturer had an inventory of 8,697 chips. The company had orders of: 1,231, 1,121, 214, and 2,030. How many chips were left on the inventory list?

Accepted Answer

To find the answer, you need to add up all the orders: 1,231 + 1,121 + 214 + 2,030 = 3,596 chips. Then, you need to subtract this number from the initial inventory: 8,697 - 3,596 = 4,101 chips. Therefore, the correct answer is C.

Question 15

Willie went Christmas shopping. He spent $75, $93.59, $10.99, $5.59, $22.96, and $6.69. He rounded the values to whole numbers and wrote a check for the sum before he got to the register. Find the estimated sum and the actual sum, and decide if it was enough to cover the bill.

Accepted Answer

The answer of Willie went Christmas shopping. He spent $75,...

Question 16

Divide: 6,118 ÷ 38

Accepted Answer

The answer of Divide: 6,118 ÷ 38
...

Question 17

Divide: 3,374 ÷ 7

Accepted Answer

The answer of Divide: 3,374 ÷ 7
...

Question 18

Multiply: 5,700 × 400

Accepted Answer

To multiply by 400, we can first multiply by 4 and then add two zeros to the end. 
5700 x 4 = 22,800 
Then add two zeros: 22,800,00. 
Therefore, the answer is 2,280,000 (Choice C).

Question 19

Jill deposited $240 into a new checking account. She wrote checks of $23.67, $57.24, and $68.34. How much is now in her account?

Accepted Answer

Jill's initial deposit was $240. She wrote checks totaling $23.67 + $57.24 + $68.34 = $149.25. Subtracting this from her initial deposit, $240 - $149.25 = $90.75.

Question 20

Multiply: 713 × 40

Accepted Answer

The answer of Multiply: 713 × 40
...

Quiz 1: Review of Basic Concepts

A music CD costs $9.99. How much change would you receive if you paid with a twenty-dollar bill?

Estimate answer by rounding numbers to the nearest ten. Then find the exact answer. A welder uses 88 welding rods for his first job and 19 welding rods for a second job. How many more rods did he use for the first job?

Estimate the sum by rounding to the nearest whole number: 2.78 + 8.48

Multiply: 237 × 702

Subtract: 1,536 - 1,232

Divide: 8,512 ÷ 28

Multiply: 403 × 27

Subtract and check your 2,155 - 919

Perform the indicated operations without a calculator: $462 / 14 =$

Estimate the quotient by rounding the divisor and dividend to numbers with one nonzero digit. Find the exact value.

Subtract: 5.9 from 14.8

A small office manager wants to buy new cordless phones for each of the office's 11 desks. Each phone costs $89.99. Estimate the total cost by using numbers with one nonzero digit. Find the exact amount.

A computer chip manufacturer had an inventory of 8,697 chips. The company had orders of: 1,231, 1,121, 214, and 2,030. How many chips were left on the inventory list?

Willie went Christmas shopping. He spent $75, $93.59, $10.99, $5.59, $22.96, and $6.69. He rounded the values to whole numbers and wrote a check for the sum before he got to the register. Find the estimated sum and the actual sum, and decide if it was enough to cover the bill.

Divide: 6,118 ÷ 38

Divide: 3,374 ÷ 7

Multiply: 5,700 × 400

Jill deposited $240 into a new checking account. She wrote checks of $23.67, $57.24, and $68.34. How much is now in her account?

Multiply: 713 × 40

Quiz 1: Review of Basic Concepts

A music CD costs $9.99. How much change would you receive if you paid with a twenty-dollar bill?

Estimate answer by rounding numbers to the nearest ten. Then find the exact answer. A welder uses 88 welding rods for his first job and 19 welding rods for a second job. How many more rods did he use for the first job?

Estimate the sum by rounding to the nearest whole number: 2.78 + 8.48

Multiply: 237 × 702

Subtract: 1,536 - 1,232

Divide: 8,512 ÷ 28

Multiply: 403 × 27

Subtract and check your 2,155 - 919

Perform the indicated operations without a calculator: 462/14=462 / 14 =462/14=

Estimate the quotient by rounding the divisor and dividend to numbers with one nonzero digit. Find the exact value.

Subtract: 5.9 from 14.8

A small office manager wants to buy new cordless phones for each of the office's 11 desks. Each phone costs $89.99. Estimate the total cost by using numbers with one nonzero digit. Find the exact amount.

A computer chip manufacturer had an inventory of 8,697 chips. The company had orders of: 1,231, 1,121, 214, and 2,030. How many chips were left on the inventory list?

Willie went Christmas shopping. He spent $75, $93.59, $10.99, $5.59, $22.96, and $6.69. He rounded the values to whole numbers and wrote a check for the sum before he got to the register. Find the estimated sum and the actual sum, and decide if it was enough to cover the bill.

Divide: 6,118 ÷ 38

Divide: 3,374 ÷ 7

Multiply: 5,700 × 400

Jill deposited $240 into a new checking account. She wrote checks of $23.67, $57.24, and $68.34. How much is now in her account?

Multiply: 713 × 40

Perform the indicated operations without a calculator: $462 / 14 =$