1.08÷0.9=1.2 1111.05÷0.9=
11.07÷0.9=12.3 11111.04÷0.9=
111.06÷0.9=123.4 ÷0.9=123456.7
1÷37= 4÷37= 2÷37= 5÷37= 3÷37= 6÷37=
9×9-1 = 80
98×9-2 = 880
987×9-3 = 8880
则: 9876 × 9 - 4=
× -=888880
6×4=24 6.6×3.4=22.44 6.66×33.4=222.444
6.666×333.4=
99×0.77=76.23
999×0.777=776.223
9999×0.7777=7776.2223
那么:999999×0.777777=
6.6×6.9=45.54
6.66×66.9=445.554
6.666×666.9=
6.6666×6666.9=
6.66666×66666.9=
4.2÷0.7=6
44.22÷6.7=6.6
444.222÷66.7=6.66
4444.2222÷666.7=
=
0.01+0.02=0.03
0.04+0.05+0.06=0.07+0.08
0.09+0.10+0.11+0.12=0.13+0.14+0.15
0.16+0.17+0.18+0.19+0.20=0.21+0.22+0.23+0.24
……
如果按照上面的规律写下去,那么第 44 个算式的最后一个数是多少?
3.3×6.9=22.77
3.33 ×66.9=222.777
3.333×666.9=
......
88.83÷9=9.87
88.884÷9=9.876
我们知道:
(100+98)×(100-98)=1002-982。
(x+y)×(x-y)=( )
(10-1)÷0.9=
(200-2)÷0.9=
(3000-3)÷0.9=
(40000-4)÷0.9=
(500000-5)÷0.9=
(6000000-6)÷0.9=
1×3+1=22
2×4+1=32
3×5+1=42
×+1=20222
n×(n+2)+1=2(n为自然数)
①1.25×(30.1﹣24.91÷4.7)
②[ ﹣( ﹣ )]÷
③15.6×13.1﹣15.6﹣15.6×2.1
④2 ×23.4+11.1×57.6+6.54×28
⑤1234+2341+3412+4123
⑥ + + + + +