4.8÷0.6= 1-0.22= 0.34×5= 36÷0.4=
2.19+9.1= 1.6×0.5= 8.4÷7= 9.6÷32=
15.75÷2.1= 4.23÷1.2=
2.5+0.5=
0.07×10=
1-0.25=
4.5-1.09=
0.4×5=
12.4n-4n=
0.16÷0.4=
2.4×0.5=
4÷0.05=
0.32=
4.8+6= 0.8×0.6= 2.4×0.5= 1.25×8=
4.5-0.45= 3÷0.5= 63÷0.9= 1.2÷6=
0.25+0.5=
4.7-0.7=
1.2×5=
9÷0.3=
0.25a+0.5a=
7.8÷6=
1.2×0.5=
7-1.99=
62.4-4=
0.25a+0.05×2=
4.56+4.44= 0.36÷0.6= 43= 1.25×5×8=
0.2×5÷0.2×5= 3-1.48= 12÷0.4= 4×0.25=
每立方厘米的质量
单位: (克)
铝
2.70
铜
8.92
锡
7.28
锌
7.14
银
10.5
铅
11.3
铁
7.86
6.3÷0.1= 14.14÷14= 8.5-1.05= 1.2: =
1+ = 632÷69≈ 0.33= =
31.5×0.931.5 5.42÷0.95.42 0.98×10.98
2.5×0.82.5÷0.8 3.56÷1.013.56 4.95÷14.95