直接写得数．
⑴ + = |
⑵ + = |
⑶ + = |
⑷ + = |
⑸ ﹣ = |
⑹ ﹣ = |
⑺ ﹣ = |
⑻ ﹣ = |
⑼ += |
⑽ ﹣ = |
⑾ += |
⑿1﹣ = |
解方程。
| ⑴4.8+x=10.3 |
⑵x÷0.6=4.5 |
⑶2x+12=28 |
| ⑷12x﹣4×7=44 |
⑸3.2x+x=23.94 |
⑹5x﹣2x=12.3． |
列式计算
（1）比0.32的5倍少3个0.5的数是多少？
（2）3.24与0.11的和乘以4，积是多少？
（3）7个0.245是多少？
能简算的要简算．
| ⑴3.4×12.5×0.15×8×2 |
⑵1.25×4.6×8 |
⑶3.14×9+3.14 |
| ⑷4.5×2.6+4.5×7.4 |
⑸125×0.74×0.08 |
⑹2.86×0.5×4.6． |
列竖式计算
| ⑴4.2×0.8 |
⑵1.5×62 |
⑶2.7×0.11 |
⑷6.22×2.5 |
