用递等式计算,能简算要简算。3.2x2.4+32x0.76 14.3÷1.1-1.8 0.76×9

2024-11-09 03:53:29
推荐回答(3个)
回答1:

解:14.3÷1.1-1.8=(11+3.3)÷1.1-1.8
=10+3-1.8
=10+1.2+1.8-1.8
=11.2
0.76×99=0.76×(100-1)
=76-0.76
=75+1-0.76
=75.24
18.48÷(3.94+4.86)

=18.48÷(4-0.06+4.8+0.06)
=18.48÷8.8
=(18+0.48)÷8.8
=(17.6+0.4+0.48)÷8.8
=(17.6+0.88)÷8.8
=2+0.1
=2.1

回答2:

3.2×2.4+32×0.76
=3.2×2.4+3.2×7.6
=3.2×(2.4+7.6)
=3.2×10
=32
14.3÷1.1-1.8
=13-1.8
=11.2
0.76×99
=0.76×(100-1)
=0.76×100-0.76×1
=76-0.76
=75.24
18.48÷(3.94+4.86)
=18.48÷8.8
=2.1

回答3:

=3.2×2.4+3.2×7.6
=3.2×(2.4+7.6)
=3.2×10
=32