Simple operation: 12.5 * (8-0.8), 2.7 * 4.3 + 5.7 * 2.7.0.. 77 * 99.6.18 * 9.9 + 0.618.0.25 * 1.25 * 0.8 * 40

Simple operation: 12.5 * (8-0.8), 2.7 * 4.3 + 5.7 * 2.7.0.. 77 * 99.6.18 * 9.9 + 0.618.0.25 * 1.25 * 0.8 * 40

12.5*(8-0.8)
=12.5*8-12.5*0.8
=100-10
=90
2.7*4.3+5.7*2.7
=2.7*（4.3+5.7）
=2.7*10
=27
0.77*99
=0.77*100-0.77
=77-0.77
=76.23
6.18*9.9+0.618
=0.618*99+0.618
=0.618*（99+1）
=0.618*100
=61.8
0.25*1.25*0.8*40
=（0.25*40）*（1.25*0.8）
=10*1
=10

How to calculate 1250 * 0.037 + 0.125 * 160 + 12.5 * 2.7

=125*0.37+125*0.16+125*0.27=125*（0.37+0.16+0.27）=125*0.8=100
I didn't graduate from primary school upstairs

1250 times 0.037 + 0125 times 160 + 12.5 times 2.7, how to calculate easily

1250 * 0.037 + 0.125 * 160 + 12.5 * 2.7? The similar number is 125. Consider adjusting 1250, 0.125 and 12.5 to an order of magnitude 1250 * 0.037 + 0.125 * 160 + 12.5 * 2.7 = 12.50 * 3.7 + 12.5 * 1.60 + 12.5 * 2.7 = 12.5 * (3.7 + 1.6 + 2.7) = 12.5 * 8 = 100

How to calculate 1250 * 0.037 + 0.125 * 160 + 12.5 * 2.7 simply

1250*0.037+0.125*160+12.5*2.7
=1250*0.037+1250*0.016+1250*0.027
=1250*(0.037+0.016+0.027)
=1250*0.08
=100