Q.1. Charlie and his father, an engineer, decided to build a treehouse in their backyard.
In order to start constructing the house, Charlie and his father needed to gather some wood from the forest. If they initially have 15 extra planks of wood in the house and Charlie and his father got 10 planks of wood each, how many pieces of wood do they have in total?
15 + 10 + 10 = 35
There are 35 planks of wood.
Q.2. Charlie and his father, an engineer, decided to build a treehouse in their backyard.
To have a more stable treehouse, Charlie’s father decided to tie the corner posts of the house to the tree itself. He used 24 inches of rope for the first post, 20 inches on the second, 14 inches on the third and 12 inches on the fourth. He also had 15 feet of cable but did not use that. How many inches of rope were used?
24 + 20 + 14 + 12 = 70
Charlie’s father used 70 inches of rope.
Q.3. Charlie and his father, an engineer, decided to build a treehouse in their backyard.
Upon finishing the treehouse, Charlie’s mother served them freshly baked cookies. If Charlie ate 15 cookies, his father ate 10 and his mother only ate 5, please write an equation to show how many cookies were eaten in total?
15 + 10 + 5 = 30
There were 30 cookies eaten.
Q.4. Charlie and his father, an engineer, decided to build a treehouse in their backyard.
While building the house, Charlie noticed that they were running out of nails, so he told his father he is going to buy some. If they still have 9 nails left and Charlie bought 2 boxes of nails, the big one containing 55 nails and the small one containing 31, how many nails will they have?
9 + 31 + 55 = 95
They have 95 pieces of nails.
Q.5. Charlie and his father, an engineer, decided to build a treehouse in their backyard.
The treehouse is almost done; all they need is to paint it. His father estimated that they will use 20 ounces of white paint, 15 ounces of green paint and 34 ounces of brown paint and 6 paintbrushes. How many ounces of paint would they buy in total?
20 + 15 + 34 = 69
They should buy a total of 69 ounces of paint.
Q.6. Annie’s birthday is next week so her friends decided to throw her a surprise party.
Jessica, Annie’s best friend, is hosting the party. She plans on making pizza for everyone. If she bought 15 pieces of pepperoni, 10 pieces of salami and 30 pieces of bacon as ingredients, how many pieces of meat did she buy in total?
15 + 10 + 30 = 55
Annie bought a total of 55 pieces of meat.
Q.7. Annie’s birthday is next week so her friends decided to throw her a surprise party.
Annie’s mother has also been asked to be a part of the surprise. She was tasked to be in charge of drinks. She bought 15 cans of pop and made 25 glasses of orange juice, 15 glasses of grape juice and 5 glasses of apple juice. How many glasses of juice would there be?
25 + 15 + 5 = 45
There were 45 glasses of juice.
Q.8. Annie’s birthday is next week so her friends decided to throw her a surprise party.
On the actual day of Annie’s birthday, almost everyone in her class came to surprise her. If Annie has 15 girl classmates, 20 boy classmates and 3 teachers in her class, write and equation showing how many people attended her birthday party.
15 + 20 + 3 = 38
A total of 38 people attended the party.
Q.9. Annie’s birthday is next week so her friends decided to throw her a surprise party.
Andrew, Annie’s other friend, was assigned with the preparation of appetizers. He decided to bring 30 hotdogs on sticks, 20 pieces of bitesized cheese pops and 40 pieces of chicken nuggets. How many portions of appetizers did Andrew bring in all?
30 + 20 + 40 = 90
Andrew brought 90 portions of appetizers in all.
Q.10. Annie’s birthday is next week so her friends decided to throw her a surprise party.
Annie’s friends wanted to make sure that there will be enough utensils to go around. If they already have 10 spoons and 10 forks and they bought 30 more for forks and 20 more spoons, how many utensils do they have available for the party?
10 + 10 + 30 + 20 = 70
There are 70 pieces of utensils available for the party.
Q.11. It’s Halloween in Chicago. Bob, Mary, John, Sue, and Sam dressed as superheroes and went out to do some trick or treating.
After passing through the houses on Main Street, the five friends counted how much candy they have. If Bob has 10 candies, Mary has 5, Sue has 20, John has 5 and Sam has 10. How many candies did they have together?
10 + 5 + 20 + 5 + 10 = 50
Together, they have 50 pieces of candies after passing Main Street.
Q.12. It’s Halloween in Chicago. Bob, Mary, John, Sue, and Sam dressed as superheroes and went out to do some trick or treating.
The friends then proceeded to the rest of the houses in their village. However, Sam had to go home earlier. She got her share of candies which are composed of 10 chewing gums, 15 chocolate bars, and 20 assorted fruit candies. How many candies did she get in total?
10 + 15 + 20 = 45
Sam got a total of 45 candies.
Q.13. It’s Halloween in Chicago. Bob, Mary, John, Sue, and Sam dressed as superheroes and went out to do some trick or treating.
After Sam and Bob left, Mary, John, and Sue decided to go home as well. They counted the total amount of treats that the three of them got. They were able to sort out 60 chewing gums, 55 chocolate bars and another 40 candies of different flavors. Write an equation to find how many treats Mary, John and Sue have in total?
60 + 55 + 40 = 155
Mary, John, and Sue have a total of 155 treats.
Q.14. It’s Halloween in Chicago. Bob, Mary, John, Sue, and Sam dressed as superheroes and went out to do some trick or treating.
The group then went on to the houses along Broadway Street and the scary Werewolf Avenue. After the long walk, they decided to count their candy again. If Mary has 5 chewing gums and 3 chocolate bars, Sam has 10 chewing gums and Sue has 15 chewing gums, how many chewing gums did the three have in all?
5 + 10 + 15 = 30
Mary, Sam, and Sue have a total of 30 chewing gums in all.
Q.15. It’s Halloween in Chicago. Bob, Mary, John, Sue, and Sam dressed as superheroes and went out to do some trick or treating.
Bob who is Sam’s nextdoor neighbor decided that he will accompany Sam home. He also took his share which consists of 15 chewing gums, 20 chocolate bars and 15 assorted candies. How many candies did he get?
15 + 20 + 15 = 50
Bob got a total of 50 candies.
11 videos57 docs25 tests

1. How can I solve addition problems? 
2. Can addition be done in any order? 
3. What is the identity property of addition? 
4. Is there a limit to the numbers that can be added? 
5. Are there any shortcuts or strategies for adding numbers mentally? 

Explore Courses for Class 3 exam
