20 questions
30 + 60 + 90 =
110
180
280
120 + 120 + 60 =
310
350
300
Add mentally: 35 and 64
99
109
88
909
Add mentally: 85 and 19
101
100
104
110
Add mentally: 256 and 144
390
410
405
400
Add mentally: 890 and 25
915
900
815
905
18 + ___________ = 100
80
82
81
__________ + 86 = 100
16
11
14
675 + _________ = 1000
335
350
325
___________ + 220 = 1000
780
755
680
225 - 95 =
135
130
120
78 - 28 =
50
45
40
449 - 58 =
391
291
390
598 - 225 =
473
373
350
Find the half and double of: 46
92
25
90
23
Find the half and double of: 900
450
600
1600
1800
Find the half and double of: 1300
2700
650
2600
625
Solve: 28 5 =
140
150
144
Solve: 47 × 4 =
108
168
188
Solve: 61 × 6 =
360
366
316