四年级数学小数加减混合运算题
消防安全培训-有关战争的古诗
四年级-小数加减混合运算题
25.6-(0.23+5.6)-1.77
13.75-(4.75+6.48)
7.83+2.34-0.83+6.66
3.82+2.9+0.18+9.1
25.48-((9.4-0.52)
5.93+0.19+2.81
48.4+2.78+51.6-0.78
4.8+8.63+5.2+0.37
1.27+3.9+0.73+15.1
132.44-(58.74+19.44)
3.25+2.76+1.75
35.6-1.8-15.6-7.2
7.3+2.7-7.3+2.7
23.4+0.8-13.4-7.2
3.07-0.38-1.62
5.84-1.8-3.2
7.5+4.8-6.5
13.75-(3.75+6.48)
7.14-0.53-2.47
13.45-4.68+2.55
47.8-7.45+8.2
36.8-4.5+6.98
49.8-9.6+8.8
1.76+0.65+3.24
7.5+4.9-6.3
4.85+8.63+0.37
36.54-1.76-8.66
23.4+3.4-0.23
15.2-6.8-3.45
0.134+2.66+0.8
3.45+1.79+0.65
1.76+3.44+0.35
8-2.45-1.02
6.02+3.6+1.98
3.07-0.38-1.62 7.5+4.9-6.5
36.8-3.9-6.88
3.285+1.79+0.59
23.4-0.8+13.4
1.29+3.7+2.71
9-2.45-1.65
32+4.9-8.6
5.93+0.49+2.06
21+0.56+11.3
乘法结合律、分配律区别练习
乘法结合律:(a×b)×c=a×( × )
24×125
93×25×4 125×50×2×8
41×25×4 25×32×125
乘法分配律:a×(b+c)=
(35+24)×2 (125+25)×8
4×(25+17) 102×36 25×42
36×47+64×47 54×98+46×98
a×b+a×c=
79×199+79
6×59+6 63×43+57×63
以下题目请分清使用乘法分配率还是结合律(使用简便算法要用递等式变换步骤不要少)
8×(125+25) 8×(125×25)
125×24×2×8 125×(2×8)
25×(4×40) 25×(4+40)
75×(2+10) 25×(4×29)
25×12
44×25 703×50
42×102
125×12 125×82