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Decimal Word Problems: Addition and Subtraction>
Decimal Word Problems: Addition and Subtraction 3Decimal Word Problems: Addition and Subtraction 3
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Question 1 of 5
1. Question
Kathy bought popcorn for `$6.75` and a drink for `$3.35`. If she had `$50`, how much change did she get?- `$` (39.90)
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First, list down the given values in the problem.Price of popcorn: `$6.75`Price of drink: `$3.35`Kathy’s money: `$50`To find how much change Kathy will get, add the cost of the popcorn and drink first, then subtract its total from Kathy’s money.First, proceed with adding the costs of the popcorn and the drink. Line up the decimal points (point over point).If there are any blank values to the right of the decimal point, write `0`.Carry Overs `1` `1` `6` `.` `7` `5` `+` `3` `.` `3` `5` `1` `0` `.` `1` `0` Finally, proceed with subtracting the total cost from Kathy’s money. Line up the decimal points (point over point).If there are any blank values to the right of the decimal point, write `0`.`5` `0` `.` `0` `0` `-` `1` `0` `.` `1` `0` `.` `0` Since `0` is less than `1` we will use borrowing to subtract`0` (units digit) `=` borrow `1` from `5``0` (tenths digit) `=` borrow `1` from `10` (units digit)`9` `4` `10` `10` `5` `0` `.` `0` `0` `-` `1` `0` `.` `1` `0` `3` `9` `.` `9` `0` Therefore, Kathy will receive `$39.90` as change.`$39.90` -
Question 2 of 5
2. Question
Noah noted that his car’s odometer reads a total of `24156.8` kilometres traveled. If the car travels a further `378.4` kilometres, what number will now show on the odometer?- (24535.2) `\text(km)`
Hint
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First, list down the given values in the problem.Current reading: `24156.8 \text(km)`Distance traveled: `378.4 \text(km)`To find the new distance shown by the odometer, simply add the current reading and the distance traveled by the car.Proceed with adding the values. Line up the decimal points (point over point).If there are any blank values to the right of the decimal point, write `0`.Carry Overs `1` `1` `1` `+` `2` `4` `1` `5` `6` `.` `8` `+` `3` `7` `8` `.` `4` `2` `4` `5` `3` `5` `.` `2` Therefore, the new distance shown on the odometer is `24535.2 \text(km)``24535.2 \text(km)` -
Question 3 of 5
3. Question
Allan has `$20` and he pays `$15.95` for a pizza. How much change will he get?- `$` (4.05)
Hint
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Fantastic!
Incorrect
First, list down the given values in the problem.Allan’s money: `$20`Price of pizza: `$15.95`To find how much change Allan will get, simply subtract the price of the pizza from Allan’s money.Proceed with subtracting the values. Line up the decimal points (point over point).If there are any blank values to the right of the decimal point, write `0`.`2` `0` `.` `0` `0` `-` `1` `5` `.` `9` `5` Since `0` is less than `5` we will use borrowing to subtract`0` (units digit) `=` borrow `1` from `2``0` (tenths digit) `=` borrow `1` from `10` (units digit)`0` (hundredths digit) `=` borrow `1` from `10` (tenths digit)`9` `9` `1` `10` `10` `10` `2` `0` `.` `0` `0` `-` `1` `5` `.` `9` `5` `4` `.` `0` `5` Therefore, Allan will receive `$4.05` as change.`$4.05` -
Question 4 of 5
4. Question
Jacob bought a screwdriver for `$15.99`, a hammer for `$10.50` and a tape measure for `$20`. How much did he spend in total?- `$` (46.49)
Hint
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Nice Job!
Incorrect
First, list down the given values in the problem.Price of screwdriver: `$15.99`Price of hammer: `$10.50`Price of tape measure: `$20`To find the total cost, simply add the prices of the screwdriver, hammer and tape measure.Proceed with adding the values. Line up the decimal points (point over point).If there are any blank values to the right of the decimal point, write `0`.Carry Overs `1` `+` `1` `5` `.` `9` `9` `+` `1` `0` `.` `5` `0` `+` `2` `0` `.` `0` `0` `4` `6` `.` `4` `9` Therefore, Jacob spent a total of `$46.49`.`$46.49` -
Question 5 of 5
5. Question
Terry rode his bike for `2.4 \text(hours)` on Tuesday, `1.85 \text(hours)` on Wednesday, and `3 \text(hours)` on Thursday. How many hours did he ride his bike for?- (7.25) `\text(hours)`
Hint
Help VideoCorrect
Exceptional!
Incorrect
First, list down the given values in the problem.Tuesday: `2.4 \text(hours)`Wednesday: `1.85 \text(hours)`Thursday: `3 \text(hours)`To find the total number of hours, simply add the hours Terry rode his bike on Tuesday, Wednesday and Thursday.Proceed with adding the values. Line up the decimal points (point over point).If there are any blank values to the right of the decimal point, write `0`.Carry Overs `1` `+` `2` `.` `4` `0` `+` `1` `.` `8` `5` `+` `3` `.` `0` `0` `7` `.` `2` `5` Therefore, Terry rode his bike a total of `7.25 \text(hours)``7.25 \text(hours)`
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