Word Problems
Cy sees 18 birds in two days. He sees 10 birds on the first day. How many birds does he see on the second day?
8
593
+ 954
1,547
h + 7 = 10
3
What is a SUM?
the answer when you are adding
Mel is a birdwatcher. This week he observed 3 fewer birds than last week. This week he observed 9 birds. How many birds did he observe last week?
12
425
+ 306
731
r − 8 = 5
13
What is a variable?
a letter used to represent an unknown number
Mel picks 11 strawberries. He uses some to make a fruit cup. What expression shows how many strawberries Mel has left?
11-a
971
+ 772
1,743
8 + y = 15
7
What is an expression?
an addition or subtraction problem with no equal sign or answer