Double Digit Dillema
Multiplication Madness
Place Value Perpetrators
Addition Attitude
100
20 + 30 =
What is 50?
100
x
What is the symbol for multiplication?
100
9
What is nine ones?
100
+
What is the addition symbol?
200
box out the ones place
What is the first step in double digit addition?
200
factors
What are the numbers you multiply called?
200
90
What is nine tens?
200
sum
What is the answer to an addition problem?
300
10
What is the magic number in double digit addition?
300
product
What is the answer to a multiplication problem?
300
60
What is six tens?
300
addends
What are the numbers you add together called?
400
regroup
What do you do if the sum of the ones place is 10 or more?
400
repeated addition
What is another phrase for multiplication?
400
58
What is five tens and eight ones?
400
Zero Property of Addition
What is the property of addition that tells us the sum of any addend added to zero is that number.
500
48 + 19 = (do you need to regroup?)
What is yes?
500
100
What is 10 x 10?
500
473
What is four hundreds, seven tens, and three ones?
500
Commutative Property of Addition
What is the property of addition that tells us it does not matter what order the addends are in, the sum will remain the same?
M
e
n
u