《2025年心算口算巧算六年级上册北师大版》

计算下面各题。
1/2 + 1/3 =
7/20 + 1/4 =
5/18 + 2/3 =
2/11×21/8 =
7/9×18/49 =
5/6÷25/9 =
3/5÷5/9 =
3/10÷7/60 =
4/7×3/7 =
2/3×6/5 =
9/10÷3/8 =
9/2×5/6 =
18÷6/7 =
16/33×11/32 =
7/12÷3/14 =
9/14÷6/7 =
2/3×9/10 =
4/11×33/28 =
1/8 + 2/9 =
2/25 + 1/5 =
4/7 - 1/3 =
3.14×20 =
3.14×0.5 =
3.14×9 =
3.14×16 =
3.14×25 =
3.14×7 =
3.14×15 =
3.14×8 =
3.14×6 =

答案： 1/2 + 1/3 = 3/6 + 2/6 = 5/6
7/20 + 1/4 = 7/20 + 5/20 = 12/20 = 3/5
5/18 + 2/3 = 5/18 + 12/18 = 17/18
2/11×21/8 = 42/88 = 21/44
7/9×18/49 = 126/441 = 2/7
5/6÷25/9 = 5/6×9/25 = 3/10
3/5÷5/9 = 3/5×9/5 = 27/25
3/10÷7/60 = 3/10×60/7 = 18/7
4/7×3/7 = 12/49
2/3×6/5 = 12/15 = 4/5
9/10÷3/8 = 9/10×8/3 = 12/5
9/2×5/6 = 45/12 = 15/4
18÷6/7 = 18×7/6 = 21
16/33×11/32 = 176/1056 = 1/6
7/12÷3/14 = 7/12×14/3 = 49/18
9/14÷6/7 = 9/14×7/6 = 3/4
2/3×9/10 = 18/30 = 3/5
4/11×33/28 = 132/308 = 3/7
1/8 + 2/9 = 9/72 + 16/72 = 25/72
2/25 + 1/5 = 2/25 + 5/25 = 7/25
4/7 - 1/3 = 12/21 - 7/21 = 5/21
3.14×20 = 62.8
3.14×0.5 = 1.57
3.14×9 = 28.26
3.14×16 = 50.24
3.14×25 = 78.5
3.14×7 = 21.98
3.14×15 = 47.1
3.14×8 = 25.12
3.14×6 = 18.84