(1) 94.3
- 28.6
65.7 (2) 27.7
+ 32.5
60.2 (3) 64
× 73
192
448
4672
(4) 32
× 64
128
192
2048 (5) 209
× 8
1672 (6)18
× 45
90
72
810
(7) 38
× 12
76
38
456
+ 273
729 (8) 56
× 16
336
56
896
- 458
438 (9) 13.4
+ 78.6
92
- 25.7
66.3
(10)原式=25×(47+13)
=25×60
=1500 (11)原式=32×(38-28)
=32×10
=320 (12) 98.1
- 27.4
70.7
- 35.8
34.9