《2025年通城学典计算能手四年级数学下册北师大版》

一、直接写出得数。
$10 - 5.22 =$ ________ $30×0.001 =$ ________ $2.4 + 0.65 =$ ________
$0.6×0.8 =$ ________ $50×0.04 =$ ________ $80×0.3 =$ ________
$1.5 + 0.25 =$ ________ $10.3 - 8.3 =$ ________ $500×0.06 =$ ________
$0.07×1.5 =$ ________ $2.03×9 =$ ________ $3.25 - 2.5 =$ ________
$0.7 + 4.4 =$ ________ $30 - 1.4 =$ ________ $2.6×0.3 =$ ________
$0.4×100 =$ ________ $9.4×0.2 =$ ________ $1.8×0.1 =$ ________
$2.8 + 8.2 =$ ________ $0.35 + 0.2 =$ ________ $0.78×20 =$ ________
$4.1×0.7 =$ ________ $0.05×5 =$ ________ $0.03×0.4 =$ ________
$4.2 - 2.5 =$ ________ $5.64 + 1.38 =$ ________ $0.05×1.8 =$ ________
$0.13 + 4.5 =$ ________ $14×0.3 =$ ________ $4.69 - 1.48 =$ ________

答案： 4.78 0.03 3.05
0.48 2 24
1.75 2 30
0.105 18.27 0.75
5.1 28.6 0.78
40 1.88 0.18
11 0.55 15.6
2.87 0.25 0.012
1.7 7.02 0.09
4.63 4.2 3.21

二、计算下面各题，能简算的要简算。
$5.78 + 2.45 + 0.55$ $18.5 - 2.7×3.4$ $7.2×8.6 + 7.2×1.4$

答案： 8.78 9.32 72

一、直接写出得数。
1.5 + 0.03 = 0.03×10 = 0.65×(0.36 - 0.34) =
3.7×0.5 = 3.07 - 0.73 = 0.48 + 0.16 + 0.52 =
8.6×0.1 = 0.45×0.4 = 0.049×100 + 0.1 =
0.15×0.6 = 2.9 + 3.12 = (6.5 + 0.1)×0.1 =
6.4 - 0.44 = 2.08×0.4 = 3.5×0.4 - 0.6 =
0.85×0.6 = 248×0.001 = 1.5×(0.6 + 0.2) =
2 - 0.03 = 0.37×100 = 71.57 - 4.76 - 1.24 =
3.3×0.06 = 1.08 + 3.1 = 13×2.5×0.4 =
0.27 - 0.2 = 0.2×26 = (25.6 - 5.6)×0.1 =
0.05×7 = 0.46 + 0.34 = (0.25 + 0.25)×1.8 =

答案： 1.53 0.3 0.013
@@1.85 2.34 1.16
@@0.86 0.18 5
@@0.09 6.02 0.66
@@5.96 0.832 0.8
@@0.51 0.248 1.21.97 37 65.57
@@0.198 4.18 13
@@0.07 5.2 2
@@0.35 0.8 0.9