《2025年通城学典计算能手四年级数学下册北师大版》

二、解方程。
4x÷12 = 27 5x - 12.8 = 7.2 x + 28.64 = 45

答案： $x = 81$ $x = 4$ $x = 16.36$

一、直接写出得数。
0.9 + 0.9 = ________ 9.6×0.01 = ________ 7 - 0.84 = ________
0.76×100 = ________ 1.6×0.4 = ________ 0.07×0.7 = ________
0.37×0.2 = ________ 0.36 + 9.6 = ________ 0.08 + 0.45 = ________
0.72×0.5 = ________ 0.4×0.31 = ________ 0.3×5.2 = ________
0.9 + 24.1 = ________ 0.3 - 0.03 = ________ 6.07 - 0.8 = ________
4.98 + 0.02 = ________ 5.1×4 = ________ 0.56×30 = ________
4.58 + 2.12 = ________ 0.9 - 0.48 = ________ 9.17×10 = ________
0.35×40 = ________ 5.76 - 4.53 = ________ 34.7×0.001 = ________
1.3×0.6 = ________ 4.3 + 4.6 = ________ 0.5 - 0.13 = ________
3.45 - 0.25 = ________ 0.26 + 0.44 = ________ 0.42×0.6 = ________

答案： 1.8 0.096 6.16
@@76 0.64 0.049
@@0.074 9.96 0.53
@@0.36 0.124 1.56
@@25 0.27 5.27
@@5 20.4 16.8
@@6.7 0.42 91.7
@@14 1.23 0.0347
@@0.78 8.9 0.37
@@3.2 0.7 0.252