姓名 ______________________日期 ____________得分 ____ / 12代数式求值练习代数式求值 · 1–12按给定的值计算每个代数式。中等替换1.8a + 4b, a = 3, b = 5中等替换2.9a + 7b, a = 7, b = 9中等替换3.2a + 4b, a = 8, b = 9中等替换4.9a − 9b, a = 8, b = 4中等替换5.9a + 8b, a = 2, b = 4中等替换6.7a + 9b, a = 5, b = 7中等替换7.6a + 3b, a = 1, b = 8中等替换8.5a + 8b, a = 5, b = 2中等替换9.2a + 8b, a = 2, b = 4中等替换10.3a − 4b, a = 8, b = 4中等替换11.2a + 6b, a = 6, b = 9中等替换12.4a + 9b, a = 7, b = 8答案 — 代数式求值练习代数式求值1.442.1263.524.365.506.987.308.419.3610.811.6612.100由 Math Sheet Studio 制作 · mathsheetstudio.com — 免费可打印数学练习卷