Properties of Addition
583+14=14+583
Commutative Property
What is the difference between 9,762 and 7,693?
2,069
(8 x 10,000) + (6 x 1,000) + (4 x 100) + (4 x 10) + (5 x 1) = ?
86,445
110 + 40 + n = 180
n = 30
What is the difference in the number of cards made in November and January?
50
136+0=136
Identity
What is the sum of 2,683 and 5,937
8,620
(8 x 100) + (2 x 10) + (3 x 1) + (6 x 0.1) + (4 x 0.01) + (8 x 0.001)
823.648
n + n + n = 1,500
n = 500
How many cards were made in February?
475
(23+41)+72=23+(41+72)
Associative
Add the following numbers:
4,320; 26,393; 17,825; 32,285
80,823
seven hundred fifty million, four hundred three thousand, eight hundred twelve
750,403,812
1,700 + 300 = n
n = 2,000
In December, 350 of the cards were Christmas Cards. How many of the cards were NOT for Christmas?
200
15.7+a = a+15.7
Commutative
A family took $300.00 on vacation. They returned home with $72.50. How much did they spend?
$227.50
Plot 6.365 on a number line between 6.36 and 6.37
: )
33 + n = 275
n = 242
In which month were the least number of cards made?
November