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题型:计算题 题类:常考题 难易度:普通
一、分数加减法 第一课时折纸①
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={#blank#}1{#/blank#}
={#blank#}2{#/blank#}
={#blank#}3{#/blank#}
+ = + = - =
- = + = + =
- = 2- = + + =
- + = +( - )= 3- - =
+ = - = - = + =
1- = -0.18= -2= 4.25+ =
⑵{#blank#}2{#/blank#}
⑶{#blank#}3{#/blank#}
⑷{#blank#}4{#/blank#}
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