
義務(wù)教育西師大版一年級(jí)下冊(cè)20以?xún)?nèi)的退位減法一練習(xí)一10-3+1= 10-4+1= 10-8+1= 10-9+1=87311-3= 11-4= 11-8= 11-9=21.先觀察,再計(jì)算。8732-11293.開(kāi)鎖。( 連線)4.看圖寫(xiě)算式。-1239-13495.看圖填空。757557949449959559410316.填一填。6104261015810267.先觀察,再計(jì)算。7997998817-9 = 16-7 = 15-8 = 13-8 = 14-8 = 16-9 = 16-8 = 15-6 =8.算一算。897567899.找媽媽。(連線)10.用8,9,17這3個(gè)數(shù),寫(xiě)兩個(gè)加法算式和兩個(gè)減法算式。+8917-8917+9817-9817把 3,5,6 這 3 個(gè)數(shù)填入下圖的圓圈中,使每邊上3 個(gè)數(shù)的和都是11。說(shuō)一說(shuō):你是怎樣想的?563
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