Decoding Decimal Dilemmas for Gold

Round the decimal number 7.856 to the nearest tenth.

• 7.8

• 7.9

• 8.0

• 7.85

Answer explanation

To round 7.856 to the nearest tenth, look at the hundredths place (5). Since it is 5 or greater, round up the tenths place from 8 to 9. Thus, 7.856 rounded to the nearest tenth is 7.9.

What is the result of adding 3.45 and 2.78?

• 5.23

• 6.13

• 6.23

• 6.33

Answer explanation

To find the sum of 3.45 and 2.78, align the decimal points and add: 3.45 + 2.78 = 6.23. Therefore, the correct answer is 6.23.

Subtract 5.67 from 9.34.

• 3.67

• 3.57

• 4.67

• 4.57

Answer explanation

To find the result of 9.34 - 5.67, align the decimal points and subtract: 9.34 - 5.67 = 3.67. Therefore, the correct answer is 3.67.

Multiply 4.2 by 3.5.

• 14.7

• 15.7

• 14.5

• 15.5

Answer explanation

To find the product of 4.2 and 3.5, multiply them: 4.2 x 3.5 = 14.7. Thus, the correct answer is 14.7.

Divide 8.4 by 2.1.

• 3.0

• 4.0

• 4.5

• 3.5

Answer explanation

To divide 8.4 by 2.1, you can simplify it as follows: 8.4 ÷ 2.1 = 4.0. Thus, the correct answer is 4.0.

Round the decimal number 12.349 to the nearest hundredth.

• 12.34

• 12.35

• 12.30

• 12.40

Answer explanation

To round 12.349 to the nearest hundredth, look at the third decimal place (9). Since 9 is 5 or greater, round up the second decimal place (4) to 5. Thus, 12.349 rounded to the nearest hundredth is 12.35.

What is the result of adding 0.75 and 1.25?

• 1.95

• 2.00

• 2.05

• 2.10

Answer explanation

To find the result of adding 0.75 and 1.25, simply align the decimal points and add: 0.75 + 1.25 = 2.00. Therefore, the correct answer is 2.00.

Subtract 2.89 from 6.54.

• 3.65

• 3.55

• 3.75

• 3.85

Answer explanation

To find the result of 6.54 - 2.89, align the numbers by the decimal point: 6.54 - 2.89 = 3.65. Thus, the correct answer is 3.65.

Multiply 5.6 by 2.3.

• 12.88

• 13.88

• 12.68

• 13.68

Answer explanation

To multiply 5.6 by 2.3, calculate 5.6 * 2.3 = 12.88. Thus, the correct answer is 12.88.

Divide 7.2 by 1.8.

• 3.5

• 4.0

• 4.5

• 5.0

Answer explanation

To divide 7.2 by 1.8, you can simplify it as follows: 7.2 ÷ 1.8 = 4.0. Thus, the correct answer is 4.0.