(1)原式=25×4×33
=100×33
=3300 (2)原式=123×2×17-123×33
=123×(34-33)
=123
(3)原式=5700÷(25×4)
=5700÷100
=57 (4)原式=354×7+354+6+354+1+354-7
=354×7+354+354+354
=3540
(5)原式=324÷(9×3)×9
=324÷3
=108 (6)原式=240×(85÷17)
=240×5
=1200
(1)原式=25×4×33
=100×33
=3300 (2)原式=123×2×17-123×33
=123×(34-33)
=123
(3)原式=5700÷(25×4)
=5700÷100
=57 (4)原式=354×7+354+6+354+1+354-7
=354×7+354+354+354
=3540
(5)原式=324÷(9×3)×9
=324÷3
=108 (6)原式=240×(85÷17)
=240×5
=1200