三年级上册数学口算速算专项训练

三年级上册数学口算速算专项训练


简介:
16 + 61 + 3 = 31 + 35 + 10 = 55 + 19 + 6 = 41 + 23 + 10 = 11 + 9 + 10 = 19 + 21 + 35 = 57 + 19 + 4 = 25 + 34 + 16 = 35 + 34 + 8 = 38 + 13 + 18 = 36 + 4 + 13 = 33 + 16 + 26 = 20 + 31 + 13 = 44 + 10 + 15 = 59 + 8 + 8 = 34 + 28 + 17 = 37 + 23 + 11 = 45 + 21 + 12 = 34 + 26 + 18 = 26 + 26 + 21 = 26 + 38 + 14 =