Decimals and Percentages

What is the result of adding 0.5 and 0.3?

• 0.7

• 1.0

• 0.6

• 0.8

Answer explanation

The question asks for the result of adding 0.5 and 0.3. The correct answer is 0.8. By adding these two numbers together, we can see that the sum of 0.5 and 0.3 equals 0.8, which validates the correct choice.

Tags

CCSS.5.NBT.B.7

Sophia went to a store to buy a dress. The original price of the dress was $80, but it was on a 25% discount. How much does she need to pay?

• $30

• $20

• $60

• $15

Answer explanation

The question states that Sophia went to buy a dress that has an original price of $80, but was given a 25% discount. To find out the amount she needs to pay, we calculate 25% of $80 which is $20. Then we subtract this from the original price ($80 - $20) which gives us $60. Therefore, the correct answer is $60.

Tags

CCSS.6.RP.A.3C

Grace, Lily, and Scarlett are baking a pie and they need to measure 3.14159 cups of flour. If they round this measurement to the nearest whole number, how many cups of flour will they need?

• 2

• 3

• 4

• 3.5

Answer explanation

The question is asking about rounding the number 3.14159 to the nearest whole number. When rounded to the nearest whole number, 3.14159 becomes 3. Therefore, Grace, Lily, and Scarlett will need 3 cups of flour for baking the pie.

Tags

CCSS.5.NBT.A.4

Multiply 0.75 by 0.4.

• 0.15

• 0.35

• 0.45

• 0.3

Answer explanation

The question asks us to multiply 0.75 by 0.4. When these two numbers are multiplied, we get 0.3. Therefore, the correct choice is 0.3.

Tags

CCSS.6.NS.B.3

Divide 1.2 by 0.6.

• 0.5

• 1.8

• 3

• 2

Answer explanation

The question asks to divide 1.2 by 0.6. When you perform this calculation, you get the result as 2. This matches with the fourth option provided. Hence, the correct answer is 2.

Tags

CCSS.5.NBT.B.7

Jackson has 0.25 dollars and Benjamin has 0.15 dollars. How much money do they have in total?

• 0.40

• 0.45

• 0.35

• 0.30

Answer explanation

The question states that Jackson has 0.25 dollars and Benjamin has 0.15 dollars. To find out how much money they have in total, we add the two amounts together. 0.25 dollars + 0.15 dollars equals 0.40 dollars. Therefore, the correct choice is 0.40.

Tags

CCSS.5.NBT.B.7

Abigail went shopping and saw a dress she liked. The original price of the dress was $200, but it was on sale for 15% off. How much would the dress cost after the discount?

• $40

• $50

• $30

• $170

Answer explanation

The question asks for the cost of the dress after a 15% discount from the original price of $200. A 15% discount on $200 equals $30, which when subtracted from the original price gives $170. Therefore, the cost of the dress after the discount is $170.

Tags

CCSS.6.RP.A.3C

Abigail, Evelyn, and Avery are in a math competition. They are asked to round the number 2.71828 to two decimal places. What should be their answer?

• 2.70

• 2.72

• 2.73

• 2.71

Answer explanation

The question asks to round the number 2.71828 to two decimal places. When rounding to two decimal places, we look at the third decimal place. If it's 5 or above, we round up the second decimal place. As the third decimal place here is '8', which is more than 5, we round '71' up to '72'. Hence, the correct answer is 2.72.

Tags

CCSS.5.NBT.A.4

Hannah has 0.6 liters of juice and she wants to use only 0.8 of it to make a fruit punch. How many liters of juice will she use?

• 0.14

• 0.48

• 1.28

• 0.96

Answer explanation

Hannah has 0.6 liters of juice and she wants to use only 0.8 of it. To find out how much juice she will use, we multiply the total amount of juice by the portion she wants to use (0.6 liters * 0.8 = 0.48 liters). Therefore, she will use 0.48 liters of juice to make her fruit punch.

Tags

CCSS.7.NS.A.3

Avery has 0.9 liters of juice and wants to divide it equally among his 0.3 liter bottles. How many bottles will he fill?

• 0.3

• 0.6

• 3

• 1.5

Answer explanation

Avery has 0.9 liters of juice and wants to divide it equally among his 0.3 liter bottles. To find out how many bottles he will fill, we divide the total juice by the capacity of each bottle. So, 0.9 liters divided by 0.3 liters equals 3. Hence, Avery will fill 3 bottles.

Tags

CCSS.6.NS.B.3