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Please give the fractional multiplication of 140.
1.3/7 × 49/9 - 4/3

2.8/9 × 15/36 + 1/27

3. 12× 5/6 – 2/9 ×3

4.8× 5/4 + 1/4

5.6÷ 3/8 – 3/8 ÷6

6.4/7 × 5/9 + 3/7 × 5/9

7.5/2 -( 3/2 + 4/5 )

8.7/8 + ( 1/8 + 1/9 )

9.9 × 5/6 + 5/6

10.3/4 × 8/9 - 1/3

1 1.7 × 5/49 + 3/ 14

12.6 ×( 1/2 + 2/3 )

13.8 × 4/5 + 8 × 1 1/5

14.3 1 × 5/6 – 5/6

15.9/7 - ( 2/7 – 10/2 1 )

16.5/9 × 18 – 14 × 2/7

17.4/5 × 25/ 16 + 2/3 × 3/4

18. 14 × 8/7 – 5/6 × 12/ 15

19. 17/32 – 3/4 × 9/24

20.3 × 2/9 + 1/3

2 1.5/7 × 3/25 + 3/7

22.3/ 14 ×× 2/3 + 1/6

23 . 1/5 × 2/3 + 5/6

24.9/22 + 1/ 1 1 ÷ 1/2

25.5/3 × 1 1/5 + 4/3

26.45 × 2/3 + 1/3 × 15

27.7/ 19 + 12/ 19 × 5/6

28. 1/4 + 3/4 ÷ 2/3

29.8/7 × 2 1/ 16 + 1/2

30. 10 1 × 1/5 – 1/5 × 2 1

1. orally calculate the following questions.

( 1)58+42= (2)87-45= (3) 125×8=

(4)50× 12= (5)804÷4= (6) 134+66=

(7) 1000-98= (8)720÷5= (9)0÷47=

2. Fill in the operation sequence of the following questions first, and then count.

( 1) 168+36-36+32=

(2) 153-5× 14+83=

(3)50×5÷50×5=

4. Calculate with a simple method:

( 1)3786-499

(2)32×25× 125

(3) 1653-338-662

(4)7987+350+20 13+450

(5)38×38+62×38

(6)452+99×452

(7)20 1×79

(8)50× 125×4×8

5. Calculate the following questions:

( 1)340×( 120-40÷8)

(2)45×(720- 1957÷ 19)

(3)86+[4500+(2088÷36)÷2]

(4)396×[74-(4875÷ 15- 13×2 1)]

(5)[ 1054-( 174- 168)]÷8

(6)6048÷[( 107-99)×9]

Off-model calculation.

408- 12×24 (46+28)×60 42×50- 17 15÷5

32+ 105÷5 ( 108+47)×52 420×(327-238)

(4 12 1+2389)÷7 67 1× 15-974 469× 12+ 1492

405×(32 13-3 189) 5000-56×23 125×(97-8 1)

6942+480÷3 304×32- 154 20+80÷4-20=

100÷(32-30)×0= 25×4- 12×5=

70×〔(42-42)÷ 18〕= 75×65+75×35=

Calculate the following questions in a simple way.

1、89+ 124+ 1 1+26+48 2、875- 147-23

3.25× 125×40×8 4、 147×8+8×53

5、 125×64 6、0.9+ 1.08+0.92+0. 1

Calculate in a simple way

①89+ 124+ 1 1+26+48 ②875- 147-23

③ 147×8+8×53 ④ 125×64

Calculate the following questions.

1.280+840÷24×5 2.85×(95- 1440÷24)

3.58870÷( 105+20×2) 4.80400-(4300+870÷ 15)

5. 1437×27+27×563 6.8 1432÷( 13×52+78)

7. 125×(33- 1) 8.37.4-(8.6+7.24-6.6)

Do the math. ( 1∶ 1)

( 1) 156× 107-7729 (2)37.85-(7.85+6.4)

(3)287×5+96990÷3 18 (4) 1554÷[(72-58)×3]

exclusive of

2800÷ 100+789 (947-599)+76×64

1.36×(9 13-276÷23) 2.(93+25×2 1)×9

3.507÷ 13×63+498 4.723-(52 1+504)÷25

5.384÷ 12+23×37 1 6.(39-2 1)×(396÷6)

( 1) 156×[( 17.7-7.2)÷3] (2)[37.85-(7.85+6.4)] ×30

(3)28×(5+969.9÷3 18) (4)8 1÷[(72-54)×9]

57× 12-560÷35 848-640÷ 16× 12

960÷( 1500-32×45) [ 192-(54+38)]×67

138×25×4 ( 13× 125)×(3×8) ( 12+24+80)×50 704×25 25×32× 125 32×(25+ 125)

178× 10 1- 178 84×36+64×84 75×99+2×75 83× 102-83×2 98× 199

123× 18- 123×3+85× 123 50×(34×4)×3 25×(24+ 16) 178×99+ 178

79×42+79+79×57 7300÷25÷4 8 100÷4÷75 75×27+ 19×2 5 3 1×870+ 13×3 10

4×(25×65+25×28) 138×25×4 ( 13× 125)×(3×8) ( 12+24+80)×50

25×32× 125 32×(25+ 125) 102×76 58×98

178× 10 1- 178 84×36+64×84