27×4 1= 43×46= 25×23= 66×57=

47×33= 87× 10= 84× 13= 15×46=

95×37= 45×86= 98×27= 43×90=

96×54= 84×8 1= 9 1×80= 84×4 1=

76×46= 60×62= 43× 10= 82×46=

9 1×32= 4 1×3 1= 34×40= 42×64=

3 1×4 1= 23×99= 76×72= 20×26=

14×78= 58×37= 42× 1 1= 88× 17=

1 1×8 1= 39×54= 43×23= 22×72=

Off-line calculation:

( 1.25-0. 125)×8

3.6× 102

3.72×3.5+6.28×3.5

36.8-3.9-6. 1

15.6× 13. 1- 15.6- 15.6×2. 1

4.8×7.8+78×0.52

32+4.9-0.9

4.8× 100. 1

56.5×9.9+56.5

7.09× 10.8-0.8×7.09

25.48-(9.4-0.52)

4.2÷3.5

320÷ 1.25÷8

18.76×9.9+ 18.76

3.52÷2.5÷0.4

3.9-4. 1+6. 1-5.9

5.6÷3.5

9.6÷0.8÷0.4

4.2×99+4.2

17.8÷( 1.78×4)

0.49÷ 1.4

1.25×2.5×32

15.2÷0.25÷4

0.89× 100. 1

146.5-(23+46.5)

3.83×4.56+3.83×5.44

4.36× 12.5×8

9.7×99+9.7

27.5×3.7-7.5×3.7

8.54÷2.5÷0.4

0.65× 10 1

(45.9-32.7)÷8÷0. 125

3. 14×0.68+3 1.4×0.032

5.6÷ 1.25÷0.8÷2.5÷0.4

7.2×0.2+2.4× 1.4

8.9× 1.0 1

7.74×(2.8- 1.3)+ 1.5×2.26

3.9×2.7+3.9×7.3

18- 1.8÷0. 125÷0.8

12.7×9.9+ 1.27

Oral calculation:

1.02×0.2= 0.26×0.3= 8.4×0.02= 1.2×6=

0.8×0.05= 12.6÷0.03= 8.7 1÷0. 1= 2 1÷0.2 1=

0.8×0. 13= 0.34÷ 17= 8.08÷0.4= 0.5×2.2=

1.24×4= 3.27+0.63= 5.02×0.3= 0.3×0.5=