下图是育才小学操场的跑道,跑道外圈与内圈相差米?(两端各是半圆)
直接写得数+= ﹣= ×= ×5=2﹣= 3÷7= ÷= ÷4=
直接写出得数.+ ﹣ ×6 ×24 × 5÷4.8(+)×6 9×0+ (+)÷ 12×11×× 1.5﹣+﹣.
直接写出得数.1÷= 1﹣﹣= ×= =×12= (3+)×0= ÷= +=
计算:﹣= 18×= = =×12= ÷2= += ﹣=
= = = == = = == = = == = = == = = == 2.5×16= = == = = == 1.5÷0.05= = 1.5÷0.05== = = 2.5×0.4== = = == = = == = = 6.25+1.75== = = == = = == = = == =