Shapes
Addition
Subtraction
Patterns & Numbers
Challenge
100
This is an octagon.
How many sides does it have?
An octagon has 8 sides.
100
2+5=
7
100
10-9=
1
100
What is this number?
twelve
12
100
Mia has 10 cupcakes. She made 8 more cupcakes. How many cupcakes does Mia have now?
10+8=18
10 then she made 8 MORE (More=ADD!!!)
200
This is a pentagon.
How many sides does it have?
A pentagon has 5 sides.
200
10+10=
20
200
25-8=
17
Check subtraction by adding 17+8=
200
Finish the pattern.
5, 10, 15, ________, ____________
20, 25
The pattern is to ADD 5 to each number.
200
Lisa had 10 kites. 9 of her kites were lost. How many kites does she have left?
10-9=1
She had 10 and LOST 9! (LOST means SUBTRACT, MINUS, LESS!!!!)
300
What shape is this? How many sides does it have?
A star and it has 10 sides.
300
30+10=
40
300
30-12=
18
19,20,21,22,23,24,25,26,27,28,29,30 (Check subtraction by counting up or adding)
18+12=30
300
How many tallies are shown?
15
5+5+5=15
3 groups of 5=15
300
I am an even number. If you add 3 to me, I am the number 5. What number am I?
2
Even=2,4,6,8,10,12,14,16...
Odd=1,3,5,7,9,11,13,15,17...
2+3=5
** ***
400
This is a cylinder. What shape is it?
This is a Cylinder.
400
200+300+500=
1,000
400
126-120=
6
Check by adding
120+6=
121, 122, 123, 124, 125, 126
400
Finish the pattern.
500, 600, 700, __________, _________, _______
800, 900, 1,000
400
6+5=5+_____
6
6+5=11 so 5+6=11 THEY ARE EQUAL=====
500
What shape has 3 sides?
A Triangle has 3 sides.
500
41+3=
44
42,43,44 (Can count up 3)
500
18-11=
7
12,13,14,15,`6,17,18 (check subtraction by adding or counting up)
500
How many tallies are there?
42.
5+5+5+5+5+5+5+5+2=42
5, 10, 15, 20
25, 30, 35, 40
41, 42
500
To find the perimeter, you add all the sides.
18 cm
6+6+3+3=18
6+6=12 ...... ......
3+3=6 ... ...