解:1万加1万+1000等于( 21000 ) ∵已知需求出1万加1万+1000等于几 1万 = 1 × 10000 = 10000 ∴1万加1万+1000 = 10000 + 10000 + 1000 = 20000 + 1000 = 21000 答:1万加1万+1000等于21000