Addition and Subtraction
Adding
493+207
Unknown 1
78 + ____ = 175
Which addition property?
4+0=0
Addition
4,461+2,124
Rounding
Round to the nearest ten to estimate the difference of
3,242 – 2,567 =
Subtracting
545-335
Unknown 2
(26+32)+ _____ =127
Which addition property ?
6+3=3+6
112,450+53,476
Rounding
Round to the nearest hundred to estimate the sum of 1,245 + 482 =
Adding
78+34
Unknown 3
76,912 + ____ = 77,912
Which addition property?
(9+8)+4=(8+4)+9
Subtraction
7,769-3,435
WILD CARD WORD PROBLEM
Cady has 435 glass marbles. She has 221 plastic marbles.
She gave 150 plastic marbles to her brother. How many total marbles does Cady have?