Addition
Estimate to add:
37 + 42 = ?
40 + 40 = 80
Estimate to subtract:
89 - 32 =
90 - 30 = 60
56 + 27 =
83
Subtract
32 - 19 =
13
60
Add:
47 + 22
69
Subtract
99 - 17 =
82
27 + 13 =
40
Subtract
71 - 49
71 - 49 + 22
What is the value of the digit in the tens place?
569
60
Estimate to add:
33 + 22 =
30 + 20 = 50
Subtract:
66 - 33 =
33
19 + 19 =
38
Subtract
22 - 19 =
3
What is the missing related fact?
7 + 9 = 16
9 + 7 = 16
16 - 7 = 9
16 - 9 = 7
Add:
89 + 10=
99
Subtract:
77 - 66 =
11
Add:
47 + 37 =
84
Subtract
70 - 29 =
=41
How much money do you have if you have 2 quarters, 3 dimes, and 5 nickels?
$1.05
Add:
14 + 5
19
Estimate to subtract
99 - 87 =
20
Add:
15 + 19 =
34
Subtract:
38 - 19 =
19
If the hour hand is just past the 7, and the minute hand is on the 9, what time is it?
7:45