3×5= 6×3= 4×7= 3×9=
1×5= 4×3= 6×2= 6+5=
4×6= 9×3= 5+5= 8×4=
75-45=
37-21=
47+0=
4+56=
7×3=
9+4=
9×4=
5×7=
5×2= 4×3= 8×4= 32+45=
6×4= 98-38= 5×9= 3×8=
2角8分-2角= 2元3角+3元5角=
3×6= 40-7= 20+39= 7×8= 7×4+20=
35+6= 9×4= 34-6= 6×5= 42+28-34=
56-3= 54-21= 7×6= 2×8= 78-(8+9)=
5×7= 3×9= 42-9= 52-7= 9×9-8=
45-38= 4×7= 5×9= 4×4+18= 98-50-9=
70-33= 63+17= 58-9= 72-8+6= 9×3-12=
16=2× 25=3×+
16=5×+ 25=5×
16=9×+ 25=10×+
16=6×+ 25=2×+
16=3×+ 25=8×+
16=7×+ 25=4×+
16=4× 25=9×+
16=10×+ 25=6×+
16=8× 25=7×+
图号
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六边形的个数(个)
小棒的根数(根)
10﹣6.8= ﹣ = 35×1%= 1.25×24= 5× ÷5× =
0.42= 10÷0.02= 5a×7a= 1÷3= 1﹣1÷6=