Yes or No
Do I need to regroup?
45-8=
Yes
37
29+30=
59
53-23=
30
Sam has 74 books.
He puts 28 books on a shelf.
How many books are NOT on the shelf?
46 books
Do I need to regroup?
51-9=
Yes
42
51+36=
87
67-26=
41
Ryan has 46 marbles.
John has 4 fewer marbles than Ryan.
John gives 9 marbles to his friend.
How many marbles does John have now?
33 marbles
Do I need to regroup?
77-6=
No
71
33+31=
64
83-62=
21
Jason has 86 photos in his computer.
He deletes 61 photos.
How many photos are left?
25 photos
Do I need to regroup?
83-4=
Yes
79
67+10=
77
38-28=
10
94 bricks are needed to build a wall.
Lindy has 65 bricks.
How many more does she need?
29 bricks
Do I need to regroup?
23-3=
No
20
75+13=
88
79-18=
61