Simple operation of 888 times 9 and 111 times 28

Simple operation of 888 times 9 and 111 times 28


=111×（8×9）+111×28
=111×72+111×28
=111×（72+28）
=111×100
=11100



Calculation: 666 × 778 + 333 × 444=______ ．


666 × 778 + 333 × 444 = 666 × 778 + 333 × (2 × 222) = 666 × 778 + 666 × 222 = 666 × (778 + 222) = 666 × 1000 = 666000



888 × 333 × 444 × 334 simple calculation fast!


888×333×444×334
=444×666+444×334
=444×(666+334)
=444000

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