文档介绍：of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of trces, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, plete with warning signs, isolating network protection facilities
3-6= 45+9= 32+9= 47+20= 56+8= 29+2= 82-9=
9+25= 29+7= 82-10= 56+9= 21÷3= 16-8= 42+7= 27+30=
76-60= 32+9= 21÷7= 76-8=
6×8+9= 9÷3×2=4×9+40= 8×5+8=
18÷2+9=6×9-7= 63÷9+2= 8×6+30=
37-9+6= 1×8+8= 49÷7+3= 45+30+20= 49+9+20= 7×7+6= 9×8-8= 24÷3+6=
32÷8+3=3+50-9= 24÷8-3=48-6+3=
口 算 题 (周四)
9×6= 48÷6= 8×6= 30-2=
7×8= 40÷5= 44-9= 5×8=
4×9= 8×5= 5×7=36÷6=
35÷5= 6×4=7×4=9×4=
7+65=54÷6= 35÷7= 7×5=
6×7= 27÷3= 5×6= 42÷6=
7×5=48÷8= 32-8=35÷7=
36÷4= 8+55= 7×4= 8×7=
21-4= 24÷6= 81÷9= 6×9=
3×8= 7÷7= 7×6= 70-2=
2×9= 34-5=64÷8= 8×4=
口 算 题 (周五)
7×8= 27÷3=9×3=8×5=
8×6=9×6=8×7=36+6=
21÷7= 6×3=7×4=9×4=
8×6= 24÷6= 35÷5= 6+57=
2×9=63÷9= 1×9= 28÷7=
of rural drinking water sources, protection of drinking water sources in rural areas by the end of the delimitation of the scope of protection, plete with warni