Addition and Subtraction
25
+62
87
00000
00000
00000
What is the repeated addition sentence for the ROWS?
What is 5+5+5 = 15
How many rows?
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
What is 4
3+3+3+3+3=
What is 15
Make an array with 2 columns of 3 shapes.
* *
* *
* *
89
-47
42
000
000
000
000
What is the repeated addition sentence for the COLUMNS?
What is 4+4+4+4 = 12
How many columns?
* * * * * *
* * * * * *
What is 6
5+5+5+5+5+5=
What is 30
Man an array with 3 rows with 4 shapes.
* * * *
* * * *
* * * *
214
+361
575
000000
000000
000000
000000
What is the repeated addition sentence for the ROWS?
What is 6+6+6+6 = 24
How many rows?
O O O O O
O O O O O
O O O O O
What is 3
6+6+6+6+6+6=
What is 36
Make an array with 6 columns with 2 shapes.
* * * * * *
* * * * * *
716
-291425
00
00
00
00
00
00
What is the repeated addition sentence for the COLUMNS?
What is 6+6 =12
How many rows, how many columns
X X X X X X X X
X X X X X X X X
What is 2 rows and 8 columns
4+4+4+4+4+4+4=
What is 28
Show me an array using 10 shapes.
*Answers may vary
* * * * *
* * * * *
OR
* *
* *
* *
* *
* *
500
-317
183
0000000
0000000
0000000
0000000
What is the repeated addition sentence for the ROWS?
What is 7+7+7+7 = 28
How many rows, how many columns
X X X X X X X
X X X X X X X
X X X X X X X
3 Rows.
7 Columns.
8+8+8+8+8+8=
48
What's the total of this array?
* * * * * * *
* * * * * * *
* * * * * * *
21
(3 rows of 7)