3 digit addition
236 + 104 =
340
148 - 104 =
44
The result of subtraction.
Difference
Tara had 67 red pens. She gave Jim 17 of her red pens. How many red pens does she have now?
67 - 17 = 50
17 + 50 = 67
Tara has 50 red pens now.
What is the value of the 5 in 458?
5 tens
50
353 + 247 =
600
259 - 136 =
123
The answer to an addition problem
Sum
Sarah gave Pete 21 red pens. Now he has 56 red pens. How many red pens did Pete have before?
56 - 21 = 35
21 + 35 = 56
Pete had 35 red pens before.
What is the value of the 9 in 954?
9 hundreds
900
472 + 489 =
961
482 - 295 =
187
When adding or subtracting which place value do you start with?
Ones
Kate has 73 blue pens. She buys 27 more blue pens. How many blue pens does she have now?
73 + 27 = 100
Kate has 100 blue pens now.
Break apart the following number:
852
800 + 50 + 2
789 + 218 =
1007
784 - 529 =
255
Which property of addition is represented here.
17+0=17
Identity property
Jack has 69 red pens and 57 blue pens. How many pens does Jack have?
69 + 57 = 126
Jack has 126 pens.
Break apart the following number:
938
900 + 30 + 8
958 + 793 =
1751
986 - 798 =
188
Which property of addition is represented here.
53+9 = 9+53
Commutative Property
Sarah finds the sum of two addends. The sum is odd. Which statement below is true?
a) both addends are odd
b) both addends are even
c) one addend is odd and one addend is even
c) one addend is odd and one addend is even
Break apart the following number:
965
900 + 60 + 5