content questions
How do we know when to regroup?
If the bottom is bigger, you better borrow!
75-21=
54
Ford and his sister have 50 cars total. If Ford has 27 cars, how many cars does his sister have?
50-27=23 cars
35-21=14
21+14=35
60-24=
36
You borrow from the tens to give to the one's.
46-19=
27
Lively had 67 butterflies, but 30 flew away. How many butterflies does she have left?
67-30=37 butterflies
70-25=45
45+25=70
48-35=
13
How would you change this number to regroup?
73 (how many tens? how many one's?)
6 tens
13 one's
68-33=
35
Millie has 77 crayons and Charlotte has 59. How many more crayons does Millie have?
77-59=18 crayons
85-4=81
81+4=85
22-17=
5
What does 'subtract' mean?
to take away
42-27=
15
Hudson had 74 dollars but Matthew took away 27 dollars. How many dollars does Hudson have left?
74-47=47 dollars
64-37=27
37+27=64
82-33=
49
What is the answer to a subtraction problem called?
the difference
70-38=
32
Bear had 91 cookies and he gave Noah 45 cookies. How many cookies does Bear have left?
91-45=46 cookies
83-24=59
24+59=83
90-25=
65