Addition & Subtraction within 20
14+6
20
27+33
60
52-33
19
Elliot had 34 cookies. He gives 16 cookies to Emery. How many cookies does Elliot have left?
24-16=18
13-4
9
52+29
81
84-67
17
Break apart to subtract: 72-8
Break 8 into 2 and 6,
72-2=70, 70-6=64
Gabby has 52 pencils. Aubrey has 24 pencils. How many more pencils does Gabby have than Aubrey?
52-24=28
6+7
13
39+19
58
72-31
41
Use compensation to show 41-29=
41-29--->41-30= 11
11+1=12
There are 52 birds at the park. 35 fly away. How many are left?
52-35=17
20-8
12
62+23
85
80-26
54
Show 72-35 on the number line
There are 68 cupcakes at the bakery. They sell 32 of them, how many cupcakes are left?
68-32=36
18-9
9
77+24
101
100-62
38
Break apart 34-21
34-20=14
14-1=13
There are 73 books in the class library. If 25 students take home 1 book, how many books are left in the library?
73-25=48 books