一个四位数减去最大的三位数，差是64，这个四位数是（ ）A.1000 B.1990 C.1063
直接写出答案========
×=÷6=
直接写得数÷7= 42×= 6÷=×33=÷=+= 10÷1%=﹣20%=﹣= 24×50%=
直接写出得数．= 15=== 0.33==== 1﹣====
×= 1÷= 4×60%= 0.875÷0.125=÷2= 10÷=×3.6= 0×=
=
=
=
=
=
=
=
=
×
=
÷6=
÷7= 42×
= 6÷
=
×33=
÷
=
+
= 10÷1%=
﹣
= 24×50%=
= 15
=
=
=
=
=
=
=
=
=
=
×
= 1÷
= 4×60%= 0.875÷0.125=
=
×3.6= 0×
=
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