练习六 月 日
1413815721515 - + 4 +8 +3 6 -1 -31515151712178616
6.5+116 -4.8 103314 -(214 +3.9) 2411-15+6130 6
(32×154+17)÷12
3-538 4 +4.8 101116 -320 -2.45+1.6 15116 -75 -2.8 (25+3114)÷4+4
- 6 -
9.28-3322813 -13 -113 3 -451015 +18 63?(5439?21?7) [58?(12?13163)?4]?23
15
练习七 月 日
直接写出得数。
2.4÷0.125= 25×0.32×0.25= 5-1 = 0.375+ =
3418
31
10-3.25+9÷0.3= 43.2÷0.125= 6-2 = 3 -1.5 =
84
55×(
133-144)= 解方程:
518+X = 1112
3X–1.4×2=1.1
X+23–1172=18 34χ+14=12
1071713-(44+313)-0.75= 13χ+60%χ=28 2X–189 = 9
5X-3×710=75 4195+2X=10 5.5x–3x = 1.75 X+375 = 10
χ-45χ=12 5109?x?11 - 7 -
练习八 月 日
解方程:
13123133X = 15× 1?x?2 X×(+)=
255
X×(1+14)= 25
X×4×158 = 10 X×2 =
8721
4 (x-6)×56=25 8x-1×3=4544 15÷X = 56 1.75x- 8 -
6812(1–5)89X = 15 X×2 = 8×334
-0.5x=6.25
练习九 月 日
解方程:
X×× = 18 X×3291 = 24×
45
X×1×335 = 4
X3 = 10
X+14x = 20
108 X×2 = 18×173 7X–4X = 21 114×x+5×45 = 12 - 9 -
练习十 月 日
一、直接写得数
42531111
5 + 5 = 7 -7 = 3 +7 = 3 -5 = 11311
2 -6 = 5-14 = 0.375+8 = 1.2+2 = 375115
74 -1.25= 12 +12 = 4 -5 = 3-9 = 21133
13 +6 = 12 +0.3= 0.8-5 = 6-28 = 47137
79 -5= 210 +16 +310 = 7.54-28 -0.125= 1513
2 +0.5= 0.125+8 = 0.4+25 = 15 -0.8 = 1184 -0.1 = 2.6-2 = 1- = 1541525 +0.4 = 45415
3.6+19 +19 = 0.8-5 +5 = 6.43-58 -0.375= 1131
0.25+5 = 2.5-4 = 4 +1.375= 34 -1.5 = 17345841
620 +3.58+120 = 3.8-19 -19 9 -(5 -9 ) = 31
38 34 -(0.75+22 )= 39) 4×9.5×2.5= 40) 3.24+0.8×7=
- 10 -