递等式计算,能简算的要简算.(1)0.89X10.1,(2)4.56X5.6+5.6X5.44,(3)92.8÷8÷1.25
递等式计算,能简算的要简算.(1)0.89X10.1,(2)4.56X5.6+5.6X5.44,(3)92.8÷8÷1.25
递等式计算,能简算的要简算.(1)0.89X10.1,(2)4.56X5.6+5.6X5.44,(3)92.8÷8÷1.25
递等式计算,能简算的要简算.(1)0.89X10.1,(2)4.56X5.6+5.6X5.44,(3)92.8÷8÷1.25
8.989 55.776 9.28
10×0.89+0.1×0.89
(1)0.89X10.1
=0.89×(10+0.1)
=0.89×10+0.89×0.1
=8.9+0.089
=8.989
(2)4.56X5.6+5.6X5.44
=5.6×(4.56+5.44)
=5.6×10
=56
(3)92.8÷8÷1.25
=92.8÷(8×1.25)
=92.8÷10
=9.28
1.
=0.89×10+0.89×0.1
=8.9+0.089
=8.989
2.
=5.6×(4.56+5.44)
=5.6×10
=56
3.
=92.8÷(8×1.25)
=92.8÷10
=9.28
0.89×10+0.89×0.1 ⌒4.56+5.44⌒×5.6 92.8÷⌒8×1.25⌒
(1)=0.89×(10+0.1)=8.9+0.089=8.989
(2)=5.6×(4.56+5.44)=5.6×10=56
=92.8÷(8×1/8)=92.8÷1=92.8
8.989,66.584,9.28