1. 直接写出得数。(14☆)
12-3.6=
1.5-0.06=
0.51÷17=
5.16÷0.3=
0.75÷25=
0.36+1.54=
4.9×0.7=
1.12×0.5=
1.01×19=
0.669÷0.03=
0.32×500=
4.5×200=
6÷12=
2.44×0.2=
4-0.78=
4×0.25=
1.6×0.4=
3.33×0.3=
0.28-0.19=
25×12=
0.87-0.49=
8÷20=
11-5.4=
32.8+19=
2.8×0.4=
1.4×0.6=
0.75÷3=
1÷5=
12-3.6=
1.5-0.06=
0.51÷17=
5.16÷0.3=
0.75÷25=
0.36+1.54=
4.9×0.7=
1.12×0.5=
1.01×19=
0.669÷0.03=
0.32×500=
4.5×200=
6÷12=
2.44×0.2=
4-0.78=
4×0.25=
1.6×0.4=
3.33×0.3=
0.28-0.19=
25×12=
0.87-0.49=
8÷20=
11-5.4=
32.8+19=
2.8×0.4=
1.4×0.6=
0.75÷3=
1÷5=
答案
1. 8.4 1.44 0.03 17.2
0.03 1.9 3.43 0.56
19.19 22.3 160 900
0.5 0.488 3.22 1
0.64 0.999 0.09 300
0.38 0.4 5.6 51.8
1.12 0.84 0.25 0.2
0.03 1.9 3.43 0.56
19.19 22.3 160 900
0.5 0.488 3.22 1
0.64 0.999 0.09 300
0.38 0.4 5.6 51.8
1.12 0.84 0.25 0.2
2. 计算下面组合图形的面积。(单位:cm)(24☆)




答案
2. 270 cm² 1360 cm²
20 cm² 66.5 cm²
20 cm² 66.5 cm²
3. 计算下面各题,能简算的要简算。(12☆)
1.2×3.9−1.2×0.9 2.1×8.64−2.1×6.64 4.27×4.7+5.73×4.7
用时:分钟 ★共得:☆/50 ☆
1.2×3.9−1.2×0.9 2.1×8.64−2.1×6.64 4.27×4.7+5.73×4.7
用时:分钟 ★共得:☆/50 ☆
答案
3. 3.6 4.2 47
登录