25Ã32çç®ä¾¿æ¹æ³
1ã32çç®ä¾¿æ¹æ³ï¼
=25x4x8
=100x8
=800
2ã32çç·æ²«åç®ä¾¿æ¹æ³:
=25x2x16
=50x16
=800
3ã32çç®ä¾¿æ¹æ³
=5x5x32
=5x160
=800
4ã32çç®ææ©ä¾¿æ¹æ³:
=(20+5)x32
=20x32+5x32
=640+160
=800
5ã32çç®ä¾¿æ¹æ³:
=25x(30+2)
=25x30+25x2
=750+50
=800
6ã32çç®ä¾¿å¬å®æ¹æ³:
=(20+5)x(30+2)
=(20+5)x30+(20+5)x2
=600+150+40+10
=800
7ã32çç®ä¾¿æ¹æ³:
=(30-5)x32
=30x32-5x32
=960-160
=800
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