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六年级分数乘法分配律练习题及详解答案

2022-09-26 来源:钮旅网
分数乘法分配律练习题

7 1 1 8

(-)×60 (+ )×18 12 5 6 9 5 5 18 1 1 (- )× ( 10 + 5 )×5 6 9 5 8 4 2 7 ( 9 + 27 )×27 90×( 18 + 30 ) ( 3 2 5 + 25 )×25 ( 15 3 6 24 - 8 )× 15 (48+ 8 1

3 )× 24 (( 5 5 6 - 9 )×18 4 3 17 17 ×( 4 + 2 ) 22 3 27 × 5 3 4 + 27 × 4 7 5 12 ×6 + 12 ×6 4 7 × 6 13 + 3 6 7 × 13 2 3 ×7+ 2 3 ×5 63 100 ×101 5 27 ×28 34× 34 35 4 4 5 ×10 25 1 ×(12+2 6 3 ) 24×( 7 5 3 24 + 6 + 4 ) 7 1 20 - 5 )×20

( 1 3

5 + 7 )×35 48×( 11 1 5 24 + 6 + 12 ) 6 7 6 2

13 × 5 - 13 × 5 3 3 7 4 3 8 × 11 + 11 ×3 8 16 5 × 7 13 - 3 5 × 7 13 21× 3 7 + 4

7 ×21 6

77 ×78 37× 3

35 6 13 ×12

3 8

×8 4 1 3

3×25 ( 5 + 7 )×7×5 5

7 1 5 5 (-)×5×12 (-)×6×18 12 5 6 9 7 7 6 6 ×101- 12×+ 10 10 13 13 9 9 3 3

×19+ 23×+ 5 5

(712- 1 5 )×60 (=7 1 12×60- 5×60 =35-12 =23 ( 5 5 6 - 9 )× 18 5 5 6 × 18 5 18 5 - 9 × 5 3-2 1 ( 8 4 9 + 27 )×27 90 8 4 9 ×27+ 27 ×27 24+4 28 ( 3 2 5 + 25 )×25 4 4 详解答案

1 6 + 8

9 )×18 = 1 6 ×18+ 8

9 ×18 =3+16 =19

( 1 1 10 + 5 )×5 = 1 ×5+ 1 10 5 ×5 = 1

2 +1 =1 1

2

×( 2 7 18 + 30 ) =90× 2 90× 7 18 + 30 =10+21 =31

1 2 6 ×(12+3 )

====== 3 2 1 1 2= 5 ×25+ 25 ×25 = 6 ×12+ 6 ×3 1

=15+2 =2+ 9 1

=17 =2 9 15 3 6 7 5 3 ( 24 - 8 )× 15 24×( 24 + 6 + 4 ) = 15 6 3 6 24 × 15 - 8 × 15 = 1 3

4 - 20 = 1

10 (48+ 8 1

3 )× 24 (=48× 1 8 1

24 + 3 × 24 =2+ 1

9 =2 1

9 ( 5 5 6 - 9 )×18 = 5 5 6 ×18- 9 ×18 =15-10 =5 4 ×( 3 17 17 4 + 2 ) = 4 3 4 17 17 × 4 + 17 × 2 =24× 7 5 3 24 +24× 6 +24× 4 =7+20+18 =45

7 20 - 1 5 )×20

= 7 20 ×20- 1 5 ×20

=7-4 =3

( 1 3

5 + 7 )×35 = 1 35+ 3

5 × 7 ×35 =7+15 =22

48×( 11 1 5 24 + 6 + 12 ) =48× 11 48× 1 5 24 + 6 +48× 12

3

= 17 +2 =22+8+20 3

=2 17 =50

22 3 5 3 6 7 6 2

×+× 27 4 27 4 13 × 5 - 13 × 5 22 5 3 6 7 2 =( 27 + 27 )× 4 = 13 ×( 5 - 5 ) =1× 3 4 = 3 4 7 + 5 12 ×6 12 ×6 =( 7 5

12 + 12 )×6 =1×6 =6 4 6 3 6 7 × 13 + 7 × 13 =( 4 3 6 7 + 7 )× 13 =1× 6 13 = 6 13 2 3 ×7+ 2 3 ×5 =( 2 3 + 2 3 )×5 =1×5 = 6

13 ×1 = 6 13

3 3 7 + 4 3 8 × 11 11 ×3 8 =3 3 8 ×( 7 4 11 + 11 )

=3 3

8 ×1

=3 3

8

16 5 × 7 3 7 13 - 5 × 13 =( 16 5 - 3 5 )× 7 13 = 13 5 × 7 13

= 7 5

21× 3 7 + 4

7 ×21 21×( 3 7 + 4 7 ) =21×1

= =5 =21 63 6

×101 ×78 100 77 63 6 =×(100+1) =×(77+1) 100 77 63 63 6 6 =×100+ =×77+×1 100 100 =63+ 63 100 =63 63 100 5 27 ×28 = 5 27 ×(27+1) = 5 27 ×27+ 5 27 ×1 =5+ 5 27 =5 5 27 34× 34 35 =(35-1)× 34 35 =35× 34 34 35 -1× 35 =34- 34 35 =33 1 35 4 4 5 ×10 25 77 77 =6+ 6 77

=6 6 77

37× 3 35 =(35+2)× 3 35 =35× 3 3 35 +2× 35 =3+ 6 35

=3 6 35 6 13 ×12

= 6 13 ×(13-1)

= 6 6

13 ×13- 13 ×1

=6- 6 13 =5 7 13 3 8

×8 4 3

=(4+)×10 =(25+)×8

5 8 4 3

=4×10+×10 =(25×8+)×8

5 8 =40+8 =200+3 =48 =203

4 1 3

3×25 (+)×7×5 5

=(3+ 4 5 )×25 =3×25+ 4

5 ×25 =75+20 =95

( 7 12 - 1 5 )×5×12 (= 7 5×12- 1 12 × 5 ×5×12 =35-12 =23 7 10 ×101- 7 10 12= 7 10 ×(101-1) = 7 10 ×100 =70 9 5 ×19+ 9 5 23= 9 5

×(19+1) 5 7 = 1 5+ 3

5 ×7× 7 ×7×5

=7+15

=22 5 6 - 5 9 )×6×18 = 5 5

6 ×6×18- 9 ×6×18 =90-60 =30

× 6 6

13 + 13 =(12+1)× 6 13 =13× 6 13 =6

× 3 3

4 + 4 =(23+1)× 3 4 9 3 =×20 =24× 4 5 =36 =18

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