概要: =1 0.25+ =1 抵消:和为零 www.youer8.com 有理数减法7- 9 = ―7― 9 = 0-(-9) = (-25)-(-13) = 8.2―(―6.3) = (-3 )-5 = (-12.5)-(-7.5) = (-26)―(-12)―12―18 = ―1―(- )―(+ ) = (- )―(- )― = (-20)-(+5)-(-5)-(-12) = (-23)―(-59)―(-3.5) = | -32 | ―(-12)―72―(-5) = (+ )―(- )― =(+ )―(- 上一页 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] 下一页
5.9 有理数的混合运算练习题(一),标签:六年级数学试卷大全,http://www.youer8.com有理数减法
7- 9 = ―7― 9 = 0-(-9) = (-25)-(-13) = 8.2―(―6.3) =
(-3 )-5
= (-12.5)-(-7.5) = (-26)―(-12)―12―18 =
―1―(- )―(+
) = (-
)―(-
)―
= (-20)-(+5)-(-5)-(-12) =
(-23)―(-59)―(-3.5) = | -32 | ―(-12)―72―(-5) = (+ )―(-
)―
=
(+ )―(-
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