Addition and Subtraction
14 + 34 = ?
48
Two lines that are opposite each other and will NEVER touch
What is PARALLEL Lines
Draw an array for 2x3
2 rows, 3 columns
In order to start constructing the house, Charlie and his father needed to gather some wood from the forest. They already have 15 planks of wood in the house. Charlie and his dad both bring back 10 planks of wood each. How many pieces of wood do they have in total?
35 planks of wood (extra 10pts for the unit!)
IN --> OUT
20 --> 29
1 --> 10
12 --> 21
55 --> 64
FIND THE RULE
Rule: +9
56 - 35 = ?
21
I am an angle that is SMALLER than a right angle
what is an ACUTE angle
Draw an array for 10x4
10 rows, 4 columns
Jessica is hosting a pizza party! After ordering the pizzas she has 15 slices of pepperoni, 12 slices of veggie, and 31 pieces of cheese. How many slices did she get in total?
58 slices of pizza (extra 10pts for the unit)
IN --> OUT
30 --> 19
18 --> 7
44 --> 33
11 --> 0
FIND THE RULE
Rule: -11
234 + 338 = ?
572
I have 4 equal sides, 2 sets of parallel lines, and 4 right angles!
I am a SQUARE
Draw an array for 3x5 AND its turn-around fact
3 rows, 5 columns
5 rows, 3 colums
Jim and his friends have 3 packets of balloons with 3 balloons in each packet. They inflate all of their balloons. 4 balloons pop. How many inflated balloons are left?
Draw a picture and solve!
Picture
5 balloons (extra 10pts for the unit)
IN --> OUT
20 --> ?
? --> 9
? --> 6
12 --> ?
RULE: x3
60
3
2
36
752 - 348 = ?
404
Name 2 rules for polygons
Sample Answers:
- at least 3 straight lines, closed shape, no curved lines
Draw an array for 6x7, then add a ROW
7 rows, 7 columns
A tiger has a mass of about 528 kilograms. A lion has a mass of about 593 kilograms. About how much more mass does the lion have than the tiger?
55 kilograms (extra 10pts for the unit)
IN --> OUT
? --> ?
? --> ?
? --> ?
THE RULE: + 30
Make your own!
Answer will vary
659 + 261 = ?
Or
432 - 255 = ?
920
Or
177
I have 4 sides, 1 set of parallel lines, 2 acute angles, and 2 obtuse angles!
I am a trapezoid
How does 5x5 help you find 5x6?
Show using an array!
1st array: 5 rows, 5 columns (25)
2nd array: 5 rows, 6 columns (30)
Sarah wants to know whether the sum of 242+771 is less than 1,000. She rounds both numbers to the nearest 10 and uses the rounded numbers to estimate the sum.
Owen wants to know the same thing, but he rounds the numbers to the nearest 100 to estimate the sum.
Calculate their estimates, then say which method you would use to figure out whether the sum is less than 1000.
Sarah: 690+230=920
Owen: 700+200=900
Rounding to the nearest 10 gets you a closer estimate!
IN --> OUT
20 --> ?
21 --> 42
? --> 18
10 --> 20
? --> ?
FIND THE RULE:
RULE: x2
40
9
answer vary