Draw an array with 4 rows of 3
Draw on board
90-40=
50
84-50=
34
There are 14 red cars and 15 blue cars in a parking lot. 12 more red cars park in the parking lot. How many cars are there in the parking lot now?
41
There are 88 second graders at school. 10 students went home early. How many second graders are still at school?
78
9+8=
17
66-22=
44
84-56=
28
You have 66 marbles. You have 22 fewer marbles than your friend, Jimmy. How many marbles does Jimmy have?
88
48 students are in their classrooms. 29 fewer students are on the playground than in their classrooms. How many students are on the playground?
19
15-6=
9
78-32=
46
51-19=
32
I buy 33 doughnuts at one shop and some more at a second shop. I have 64 doughnuts now. How many did I buy at the second shop?
31
You have 55 holiday cards to send out. You send out 23 holiday cards on Monday and 8 more on Tuesday. How many holiday cards do you have left?
24
26+35=
61
49-16=
33
43-25=
18
You make 13 origami dogs and 25 origami fish. Your friend, Suzzie, makes 15 more origami animals than you did. How many origami animals did Suzzie make?
53
You have 54 candy canes and 21 cups of hot chocolate. How many more candy canes do you have than cups of hot chocolate?
33
25+15+52=
92
44-28=
16
99-35=
64
The second graders are going on a field trip! There are four busses. On the first three busses, there are 20 students on each. There are a total of 88 second graders. How many students are on the fourth bus?
28
The normal temperature in December is 45 degrees Fahrenheit. It is 22 degrees Fahrenheit colder than the normal temperature today. What is today's temperature?
23 degrees Fahrenheit