1. Special training of simple operation in the second volume of mathematics in grade four.
49700÷700 ( 12+24+80)×50
1248÷24
3 150÷ 15
4800÷25
2 1500÷ 125
123× 18- 123×3+85× 123
158+262+ 138
375+2 19+38 1+225
500 1-247- 102 1-232
( 18 1+2564)+27 19
2. Special training for simple operation in the second volume of fourth grade mathematics.
123× 18- 123×3+85× 123 178×99+ 178
75×24
138×25×4
79×42+79+79×57
7300÷25÷4
8 100÷4÷75
( 13× 125)×(3×8)
16800÷ 120
30 100÷2 100
3. Special training of simple operation in the second volume of fourth grade mathematics
178× 10 1- 178 84×36+64×84
75×99+2×75
8 100÷4÷75
16800÷ 120
83× 102-83×2
50×(34×4)×3
25×(24+ 16)
704×25
7300÷25÷4
98× 199
4. Special training of simple operation in the second volume of fourth grade mathematics
25×32× 125 79×42+79+79×57
138×25×4
( 13× 125)×(3×8)
( 12+24+80)×50
704×25
178×99+ 178
25×32× 125
32×(25+ 125)
88× 125
102×76
5. Special training of simple operation in the second volume of fourth grade mathematics
158+262+ 138 375+2 19+38 1+225
500 1-247- 102 1-232
32×(25+ 125)
( 18 1+2564)+27 19
378+44+ 1 14+242+222
276+228+353+2 19
178× 10 1- 178
(375+ 1034)+(966+ 125)
(2 130+783+270)+ 10 17
88× 125
6. Special training of simple operation in the second volume of fourth grade mathematics
128+35×3 700- 125×3
330÷5+46×7
104×9-72÷8
145- 150÷2+23
984÷6×3
18×5+522÷3
48×3+240×2
89×2+86
450÷5+29×6
784÷8+ 105×4
252÷9÷( 1 1-4)
560÷4-630÷7