3
计算
1.4×60=
1.39×2=
0.4×2.8=
4.2×10=
1.89×5=
0.9×0.6=
1.2×80=
2.6×0.3=
0.8×0.5=
1.3×20=
3.1×6=
0.7×0.8=
2.4×50=
4.9×0.7=
4.6×4=
1.9×30=
6.2×0.3=
20×0.9=
2.1×20=
13.5×2=
0.3×4.5=
4.4×10=
3.8×0.4=
1.25×8=
6.2×10=
0.15×0.3=
1.23×0.3=
2.7×40=
0.29×40=
1.88×0.2=
5.3×30=
0.18×20=
4.5×3=
计算
1.4×60=
84
1.39×2=
2.78
0.4×2.8=
1.12
4.2×10=
42
1.89×5=
9.45
0.9×0.6=
0.54
1.2×80=
96
2.6×0.3=
0.78
0.8×0.5=
0.4
1.3×20=
26
3.1×6=
18.6
0.7×0.8=
0.56
2.4×50=
120
4.9×0.7=
3.43
4.6×4=
18.4
1.9×30=
57
6.2×0.3=
1.86
20×0.9=
18
2.1×20=
42
13.5×2=
27
0.3×4.5=
1.35
4.4×10=
44
3.8×0.4=
1.52
1.25×8=
10
6.2×10=
62
0.15×0.3=
0.045
1.23×0.3=
0.369
2.7×40=
108
0.29×40=
11.6
1.88×0.2=
0.376
5.3×30=
159
0.18×20=
3.6
4.5×3=
13.5
答案:
解析:这些题目都是基础的小数乘法口算题,主要考察小数乘法的计算方法和准确性。
答案:
1.4×60 = 84
1.39×2 = 2.78
0.4×2.8 = 1.12
4.2×10 = 42
1.89×5 = 9.45
0.9×0.6 = 0.54
1.2×80 = 96
2.6×0.3 = 0.78
0.8×0.5 = 0.4
1.3×20 = 26
3.1×6 = 18.6
0.7×0.8 = 0.56
2.4×50 = 120
4.9×0.7 = 3.43
4.6×4 = 18.4
1.9×30 = 57
6.2×0.3 = 1.86
20×0.9 = 18
2.1×20 = 42
13.5×2 = 27
0.3×4.5 = 1.35
4.4×10 = 44
3.8×0.4 = 1.52
1.25×8 = 10
6.2×10 = 62
0.15×0.3 = 0.045
1.23×0.3 = 0.369
2.7×40 = 108
0.29×40 = 11.6
1.88×0.2 = 0.376
5.3×30 = 159
0.18×20 = 3.6
4.5×3 = 13.5
答案:
1.4×60 = 84
1.39×2 = 2.78
0.4×2.8 = 1.12
4.2×10 = 42
1.89×5 = 9.45
0.9×0.6 = 0.54
1.2×80 = 96
2.6×0.3 = 0.78
0.8×0.5 = 0.4
1.3×20 = 26
3.1×6 = 18.6
0.7×0.8 = 0.56
2.4×50 = 120
4.9×0.7 = 3.43
4.6×4 = 18.4
1.9×30 = 57
6.2×0.3 = 1.86
20×0.9 = 18
2.1×20 = 42
13.5×2 = 27
0.3×4.5 = 1.35
4.4×10 = 44
3.8×0.4 = 1.52
1.25×8 = 10
6.2×10 = 62
0.15×0.3 = 0.045
1.23×0.3 = 0.369
2.7×40 = 108
0.29×40 = 11.6
1.88×0.2 = 0.376
5.3×30 = 159
0.18×20 = 3.6
4.5×3 = 13.5
描出下面各点,并依次连接起来,看看是什么图形
A (1,7)
B (1,5)
C (7,5)
D (7,4)
E (9,6)
F (7,8)
G (7,7)
A (1,7)

A (1,7)
B (1,5)
C (7,5)
D (7,4)
E (9,6)
F (7,8)
G (7,7)
A (1,7)
答案:

连接后得到的图形是一个箭头
连接后得到的图形是一个箭头
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