口算．510÷10=510÷100=5.1×10=5.1×100=0.12×6=7.8÷3=0.606÷0.3=6.4÷0.8=0.125×8=2.8÷1.4=0.25÷0.5=9.6÷0.24=5.25÷5=0.12×0.5=2.8-1.43=7.21÷7=8.1÷0.03=2.8+1.43=0.42÷0.14=100-16.8=

Question

口算．

510÷10=	510÷100=	5.1×10=	5.1×100=
0.12×6=	7.8÷3=	0.606÷0.3=	6.4÷0.8=
0.125×8=	2.8÷1.4=	0.25÷0.5=	9.6÷0.24=
5.25÷5=	0.12×0.5=	2.8-1.43=	7.21÷7=
8.1÷0.03=	2.8+1.43=	0.42÷0.14=	100-16.8=

510÷10=	510÷100=	5.1×10=	5.1×100=
0.12×6=	7.8÷3=	0.606÷0.3=	6.4÷0.8=
0.125×8=	2.8÷1.4=	0.25÷0.5=	9.6÷0.24=
5.25÷5=	0.12×0.5=	2.8-1.43=	7.21÷7=
8.1÷0.03=	2.8+1.43=	0.42÷0.14=	100-16.8=

510÷10=510÷100=5.1×10=5.1×100=510÷10=510÷100=5.1×10=5.1×100=0.12×6=7.8÷3=0.606÷0.3=6.4÷0.8=0.12×6=7.8÷3=0.606÷0.3=6.4÷0.8=0.125×8=2.8÷1.4=0.25÷0.5=9.6÷0.24=0.125×8=2.8÷1.4=0.25÷0.5=9.6÷0.24=5.25÷5=0.12×0.5=2.8-1.43=7.21÷7=5.25÷5=0.12×0.5=2.8-1.43=7.21÷7=8.1÷0.03=2.8+1.43=0.42÷0.14=100-16.8=8.1÷0.03=2.8+1.43=0.42÷0.14=100-16.8=

Answer 1

510÷10=51	510÷100=5.1	5.1×10=51	5.1×100=510
0.12×6=0.72	7.8÷3=2.6	0.606÷0.3=2.02	6.4÷0.8=8
0.125×8=1	2.8÷1.4=2	0.25÷0.5=0.5	9.6÷0.24=40
5.25÷5=1.05	0.12×0.5=0.6	2.8-1.43=1.37	7.21÷7=1.03
8.1÷0.03=170	2.8+1.43=4.23	0.42÷0.14=3	100-16.8=83.2

510÷10=51510÷100=5.15.1×10=515.1×100=510510÷10=51510÷10=51510÷100=5.1510÷100=5.15.1×10=515.1×10=515.1×100=5105.1×100=5100.12×6=0.727.8÷3=2.60.606÷0.3=2.026.4÷0.8=80.12×6=0.720.12×6=0.727.8÷3=2.67.8÷3=2.60.606÷0.3=2.020.606÷0.3=2.026.4÷0.8=86.4÷0.8=80.125×8=12.8÷1.4=20.25÷0.5=0.59.6÷0.24=400.125×8=10.125×8=12.8÷1.4=22.8÷1.4=20.25÷0.5=0.50.25÷0.5=0.59.6÷0.24=409.6÷0.24=405.25÷5=1.050.12×0.5=0.62.8-1.43=1.377.21÷7=1.035.25÷5=1.055.25÷5=1.050.12×0.5=0.60.12×0.5=0.62.8-1.43=1.372.8-1.43=1.377.21÷7=1.037.21÷7=1.038.1÷0.03=1702.8+1.43=4.230.42÷0.14=3100-16.8=83.28.1÷0.03=1708.1÷0.03=1702.8+1.43=4.232.8+1.43=4.230.42÷0.14=30.42÷0.14=3100-16.8=83.2100-16.8=83.2