11.75-1.7=
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
7个0.245是多少？
3.24与0.11的和乘以4，积是多少？
比0.32的5倍少3个0.5的数是多少？
直接写得数（每小题0.5分，共6分）。+=+=+=+=﹣=﹣=﹣=﹣=+=﹣=+= 1﹣=
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