《2025年心算口算巧算五年级上册北师大版》

1 算一算。
12.5÷5=
0.38÷19=
7.4÷3.7=
30.8÷28=
0.96÷12=
3.32÷0.8=
65.6÷41=
4.25÷25=
8.8÷11=

答案： 2.5
0.02
2
1.1
0.08
4.15
1.6
0.17
0.8

2 脱式计算。
2.05÷0.82+27.5
(12.3-7.5)÷0.8+2.7
3.6÷1.2+0.5×5
4.8÷4.8×0.2-0.2
4.6÷(1.8+0.5)×5.1
4.53+19.8÷(26.8-4.8)
7.5÷0.3×27.6
(1.8+202)÷2.5-25.5

答案： 2.05÷0.82+27.5
=2.5+27.5
=30
(12.3-7.5)÷0.8+2.7
=4.8÷0.8+2.7
=6+2.7
=8.7
3.6÷1.2+0.5×5
=3+2.5
=5.5
4.8÷4.8×0.2-0.2
=1×0.2-0.2
=0
4.6÷(1.8+0.5)×5.1
=4.6÷2.3×5.1
=2×5.1
=10.2
4.53+19.8÷(26.8-4.8)
=4.53+19.8÷22
=4.53+0.9
=5.43
7.5÷0.3×27.6
=25×27.6
=690
(1.8+202)÷2.5-25.5
=203.8÷2.5-25.5
=81.52-25.5
=56.02