Vocabulary
This is a way to describe a number that has an uneven number of objects if you split the number into two group. It's the opposite of even.
At the zoo, there were 42 lions in their cages. There are 9 more hippos than lions. How many hippos are at the zoo?
51 hippos.
3 sides 3 angles
Triangle
83 - 67 =
16
3 hundreds 8 tens 7 ones
387
James had some pencils. He bought a new pack with 25 pencils. Now he has 89 pencils. How many did he have at the beginning?
4 sides 4 corners
185 - 69 =
116.
9 ones 5 hundreds 8 tens
589
If somebody asks you to take your best guess at how many marbles are in a jar or how tall is a tree, they are asking you to do what?
Estimate
At the zoo, there were 42 monkeys in their cages. There are 9 more monkeys than bears. How many bears are at the zoo?
33 bears.
pentagon
113- 85 =
28
6 hundred 3 ones
603
This word means doing math quickly and accurately. An example would be turning 89 + 54 into 90 + 53.
Efficient
There were 30 people at the play theater. 8 people left because they thought it was boring. 7 people left to go to the bathroom after that. How many people are still in the theater?
15 people
A hexagon has how many sides?
6
513 - 385
128
2 hundreds 12 tens 9 ones
329
Minuend
There are some people at a baseball watching party. There were 7 Cubs fans but 13 more Nats fans than Cubs fans. How many total fans were there?
27 fans.
Polygon
600 - 358
242
1 hundred 22 tens 13 ones
333