A-A+
递等式计算(能简便就要简便)①78+512-16②11126-1113-213+226③32
问题详情
①
参考答案
①78+512-16,
=24×(78+512-16)÷24,
=(24×78+24×512-24×16)÷24,
=(21+10-4)÷24,
=27÷24,
=98,
=118;
②11126-1113-213+226,
=(11126+226)-(1113+213),
=1.5-1,
=0.5;
③3227-(527+716),
=3227-527-716,
=1-716,
=916;
④10-29-39,
=10-(29+39),
=10-59,
=949;
⑤59-(56-712),
=36×[59-(56-712)]÷36,
=[36×59-36×(56-712)]÷36,
=[20-(30-21)]÷36,
=[20-9]÷36,
=11÷36,
=1136;
⑥35+127+0.4-27,
=(35+0.4)+(127-27),
=1+1,
=2.
考点:等式