| 48×199+48 36×102 25×96×125 28×36+48×54. |
| (1)48×199+48, =48×(199+1), =48×200, =9600; (2)36×102, =36×(100+2), =36×100+36×2, =3600+72, =3672; (3)25×96×125, =25×4×8×3×125, =(25×4)×(8×125)×3, =100×1000×3, =300000; (4)28×36+48×54, =28×36+6×8×6×9, =28×36+36×72, =(28+72)×36, =100×36, =3600. |
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