答案：解析：这些题目都是基础的加减法运算，考查学生对100以内数的加减法的掌握。
答案：
$95 - 12 = 83$
$88 - 27 = 61$
$8 + 9 = 17$
$10 + 23 = 33$
$74 - 42 = 32$
$67 - 20 = 47$
$65 + 12 = 77$
$32 + 25 = 57$
$35 - 13 = 22$
$12 + 45 = 57$
$13 - 9 = 4$
$9 + 7 = 16$
$8 + 3 = 11$
$22 + 62 = 84$
$17 + 11 = 28$
$34 + 63 = 97$
$69 - 55 = 14$
$13 - 5 = 8$
$10 + 52 = 62$
$86 - 15 = 71$

答案：解析：本题考查100以内数的加减法，直接进行运算即可。
答案：
$96 - 13 = 83$
$52 + 15 = 67$
$74 - 24 = 50$
$9 + 8 = 17$
$24 + 63 = 87$
$16 - 9 = 7$
$59 - 22 = 37$
$89 - 27 = 62$
$9 + 4 = 13$
$41 + 26 = 67$
$68 - 44 = 24$
$13 + 26 = 39$
$65 - 34 = 31$
$14 + 22 = 36$
$11 - 7 = 4$
$4 + 12 = 16$
$98 - 12 = 86$
$18 - 4 = 14$
$52 + 13 = 65$
$14 - 3 = 11$

答案：解析：这些题目都是基础的加减法运算，考查的是100以内数的加减法掌握情况。可以直接进行计算。
答案：
$50 + 21 = 71$
$17 - 4 = 13$
$59 - 34 = 25$
$20 + 30 = 50$
$22 + 47 = 69$
$65 - 30 = 35$
$11 + 41 = 52$
$7 + 8 = 15$
$5 + 6 = 11$
$37 + 51 = 88$
$67 - 45 = 22$
$30 + 55 = 85$
$11 - 4 = 7$
$88 - 35 = 53$
$98 - 34 = 64$
$65 - 32 = 33$
$19 - 2 = 17$
$3 + 9 = 12$
$16 - 10 = 6$
$49 - 12 = 37$