直接写得数.
90÷3= 5×200= 400×6= 11×70= 7×700=
62÷4= 2400﹣900= 38+72= 40÷4= 48÷8=
230×4= 32×5= 80×3= 4×25= 1000﹣49=
4×500= 78÷6= 66+77= 
+
= 
﹣
=
直接写得数.
90÷3= 5×200= 400×6= 11×70= 7×700=
62÷4= 2400﹣900= 38+72= 40÷4= 48÷8=
230×4= 32×5= 80×3= 4×25= 1000﹣49=
4×500= 78÷6= 66+77= += ﹣=
=
÷10=
×
×
=
×
=
÷
= 6×
=
×9×
= 5÷
÷5=
÷2=
÷
= 6×
=
×2=
=
×
= 18÷
= 3﹣
=
是36，这个数是多少？
= 0.8
= 0.5×
= 1
=
= 3
= 8÷0.125= 1
=
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