育才学习网1.80道一步口算题写计算过程答案（小数,分数）
17*40=680, 100-63=37, 3.2+1.68=4.88, 2.8*0.4= 1.12
14-7.4=6.6, 1.92÷0.04=48, 0.32*500=160, 0.65+4.35= 5
10-5.4=4.6, 4÷20=0.2, 3.5*200=700, 1.5-0.06=1.44
0.75÷15=0.05, 0.4*0.8=0.32, 4*0.25=1, 0.36+1.54=2
1.01*99=99.99, 420÷35=12, 25*12=300, 135÷0.5=270
3/4 + 1/4 =1, 2 + 4/9 =22/9, 3 - 2/3 =7/3, 3/4 - 1/2= 1/4
1/6 + 1/2 -1/6 =1/2, 7.5-(2.5+3.8)=1.2, 7/8 + 3/8 =5/4
3/10 +1/5 =1/2, 4/5 - 7/10 =1/10, 2 - 1/6 -1/3 =1.5
0.51÷17=0.03, 32.8+19=51.8, 5.2÷1.3=4, 1.6*0.4= 0.64
4.9*0.7=3.43, 1÷5=0.2, 6÷12=0.5, 0.87-0.49=0.38
2.一年级加减脱式计算怎么写
脱式计算即递等式计算，把计算过程完整写出来的运算，也就是脱离横式的计算。在计算混合运算时，通常是一步计算一个算式（逐步计算，等号不能写在原式上），要写出每一步的过程。一般来说，等号要往前，不与第一行对齐。
比如：8-3+2=5+2=72+4-3=6-3=3
在乘除法连续计算时中，要按从左往右的顺序依次计算。
扩展资料
1、一般情况下，四则运算的计算顺序是：有括号时，先算括号里面的；只有同一级运算时，从左往右；含有两级运算，先算乘除后算加减。
2、由于有的计算题具有它自身的特征，这时运用运算定律，可以使计算过程简单，同时又不容易出错。
加法交换律：a+b=b+a
乘法交换律：a*b=b*a
加法结合律：（a+b）+c=a+(b+c)
乘法结合律：（a*b）*c=a*(b*c)
3.80道一步口算题写计算过程答案（小数,分数）
17*40=680, 100-63=37, 3.2+1.68=4.88, 2.8*0.4= 1.12
14-7.4=6.6, 1.92÷0.04=48, 0.32*500=160, 0.65+4.35= 5
10-5.4=4.6, 4÷20=0.2, 3.5*200=700, 1.5-0.06=1.44
0.75÷15=0.05, 0.4*0.8=0.32, 4*0.25=1, 0.36+1.54=2
1.01*99=99.99, 420÷35=12, 25*12=300, 135÷0.5=270
3/4 + 1/4 =1, 2 + 4/9 =22/9, 3 - 2/3 =7/3, 3/4 - 1/2= 1/4
1/6 + 1/2 -1/6 =1/2, 7.5-(2.5+3.8)=1.2, 7/8 + 3/8 =5/4
3/10 +1/5 =1/2, 4/5 - 7/10 =1/10, 2 - 1/6 -1/3 =1.5
0.51÷17=0.03, 32.8+19=51.8, 5.2÷1.3=4, 1.6*0.4= 0.64
4.9*0.7=3.43, 1÷5=0.2, 6÷12=0.5, 0.87-0.49=0.38
4.数学计算题大全：要答案
0.26 + 0.35 = 0.61 0.33 + 0.45 = 0.78 0.4 + 0.55 = 0.95 0.47 + 0.65 = 1.12 0.54 + 0.75 = 1.29 0.61 + 0.85 = 1.46 0.68 + 0.95 = 1.63 0.75 + 1.05 = 1.8 0.82 + 1.15 = 1.97 0.89 + 1.25 = 2.14 0.96 + 1.35 = 2.31 1.03 + 1.45 = 2.48 1.1 + 1.55 = 2.65 1.17 + 1.65 = 2.82 1.24 + 1.75 = 2.99 1.31 + 1.85 = 3.16 1.38 + 1.95 = 3.33 1.45 + 2.05 = 3.5 1.52 + 2.15 = 3.67 1.59 + 2.25 = 3.84 1.66 + 2.35 = 4.01 1.73 + 2.45 = 4.18 1.8 + 2.55 = 4.35 1.87 + 2.65 = 4.52 1.94 + 2.75 = 4.69 2.01 + 2.85 = 4.86 2.33 * 1.5 = 3.495 2.4 * 2 = 4.8 2.47 * 2.5 = 6.175 2.54 * 3 = 7.62 2.61 * 3.5 = 9.135 2.68 * 4 = 10.72 2.75 * 4.5 = 12.375 2.82 * 5 = 14.1 2.89 * 5.5 = 15.895 2.96 * 6 = 17.76 3.03 * 6.5 = 19.695 3.1 * 7 = 21.7 3.17 * 7.5 = 23.775 3.24 * 8 = 25.92 3.31 * 8.5 = 28.135 3.38 * 9 = 30.42 3.45 * 9.5 = 32.775 3.52 * 10 = 35.2 3.59 * 10.5 = 37.695 3.66 * 11 = 40.26 3.73 * 11.5 = 42.895 3.8 * 12 = 45.6 3.87 * 12.5 = 48.375 3.94 * 13 = 51.22 3.25 - 2.15 = 1.1 4.02 - 2.75 = 1.27 4.79 - 3.35 = 1.44 5.56 - 3.95 = 1.61 6.33 - 4.55 = 1.78 7.1 - 5.15 = 1.95 7.87 - 5.75 = 2.12 8.64 - 6.35 = 2.29 9.41 - 6.95 = 2.46 10.18 - 7.55 = 2.63 10.95 - 8.15 = 2.8 11.72 - 8.75 = 2.97 12.49 - 9.35 = 3.14 13.26 - 9.95 = 3.31 14.03 - 10.55 = 3.48 14.8 - 11.15 = 3.65 15.57 - 11.75 = 3.82 16.34 - 12.35 = 3.99 17.11 - 12.95 = 4.16 17.88 - 13.55 = 4.33 18.65 - 14.15 = 4.5 19.42 - 14.75 = 4.67 20.19 - 15.35 = 4.84 20.96 - 15.95 = 5.01 21.73 - 16.55 = 5.18 22.5 - 17.15 = 5.35 2.5 ÷ 0.5 = 5.00 3 ÷ 1 = 3.00 3.5 ÷ 1.5 = 2.33 4 ÷ 2 = 2.00 4.5 ÷ 2.5 = 1.80 5 ÷ 3 = 1.67 5.5 ÷ 3.5 = 1.57 6 ÷ 4 = 1.50 6.5 ÷ 4.5 = 1.44 7 ÷ 5 = 1.40 7.5 ÷ 5.5 = 1.36 8 ÷ 6 = 1.33 8.5 ÷ 6.5 = 1.31 9 ÷ 7 = 1.29 9.5 ÷ 7.5 = 1.27 10 ÷ 8 = 1.25 10.5 ÷ 8.5 = 1.24 11 ÷ 9 = 1.22 11.5 ÷ 9.5 = 1.21 12 ÷ 10 = 1.20 12.5 ÷ 10.5 = 1.19 13 ÷ 11 = 1.18 13.5 ÷ 11.5 = 1.17 14 ÷ 12 = 1.17。
