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?

Mathematical Equivalence

ON

Tags

CCSS.1.OA.A.1

Match the following

• 21

• 4x5

• 28

• 2x9

• 81

• 4x7

• 18

• 9x9

• 20

• 7x3

Tags

CCSS.3.OA.A.1

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?​ (a)  

• 95
• 105
• 85
• 75

Tags

CCSS.3.OA.D.8

Reorder the following from greatest to least:

• 658

• 981

• 783

• 549

• 345

Tags

CCSS.4.NBT.A.2

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?

Tags

CCSS.4.MD.A.2

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?​ (a)   ​

• 69
• 79
• 89
• 54

Tags

CCSS.3.OA.D.8

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, how many cookies were eaten in total?

• 35

• 30

• 20

• 25

Tags

CCSS.2.OA.A.1

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?

​ (a)  

• 55
• 45
• 65
• 60

Tags

CCSS.3.OA.D.8

Match the following

• 4

• 50/2

• 10

• 20/2

• 5

• 100/20

• 3

• 12/3

• 25

• 39/13

Tags

CCSS.3.OA.A.2

Andrew, Annie’s other friend, was assigned with the preparation of appetizers. He decided to bring 30 hotdogs on sticks, 20 pieces of bite-sized cheese pops and 40 pieces of chicken nuggets. How many portions of appetizers did Andrew bring in all?​

​ (a)  

• 90
• 100
• 95
• 80

Tags

CCSS.3.OA.D.8