0.2×0.3= 4.9÷7= 2.5×4=
2.4÷0.2= 2.8×100= 0.8÷0.4=
0.1×60= 5÷0.01= 3.89×0+3.89=
(只)
先算-9=
再算20+=
先算3+8=
再算
+= 3﹣= ×= ÷=
+= -= ÷51= ×5.6=