67x5.3+4.7x6.8简便计算
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67x5.3+4.7x6.8简便计算
67x5.3+4.7x6.8
=(6.8-0.1)x53+4.7x6.8
=6.8x(53+4.7)-5.3
=6.8x57.7-5.3
=(10-3-0.2)x57.7-5.3
=577-173.1-11.54-5.3
=577-189.94
=577-177-12-0.94
=400-12-1+0.06
=387.06
67x5.3+4.7x6.8
=(6.8-0.1)x53+4.7x6.8
=6.8x(53+4.7)-5.3
=6.8x57.7-5.3
=(10-3-0.2)x57.7-5.3
=577-173.1-11.54-5.3
=577-189.94
=577-177-12-0.94
=400-12-1+0.06
=387.06
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67x5.3+4.7x6.8简便计算
67x5.3+4.7x6.8
=(6.8-0.1)x53+4.7x6.8
=6.8x(53+4.7)-5.3
=6.8x57.7-5.3
=(10-3-0.2)x57.7-5.3
=577-173.1-11.54-5.3
=577-189.94
=577-177-12-0.94
=400-12-1+0.06
=387.06.
67x5.3+4.7x6.8
=(6.8-0.1)x53+4.7x6.8
=6.8x(53+4.7)-5.3
=6.8x57.7-5.3
=(10-3-0.2)x57.7-5.3
=577-173.1-11.54-5.3
=577-189.94
=577-177-12-0.94
=400-12-1+0.06
=387.06.
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6.8×5.3+4.7×6.8
=6.8×（5.3+4.7）
=6.8×10=68
=6.8×（5.3+4.7）
=6.8×10=68
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