人教版三年级上《三位数加减法的估算》练习题及答案 求:小学三年级数学计算题100道(三位数加减)
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198+109=
134+150=
253+120=
190+156=
178+123=
240+100=
140+140=
120+125=
134+123=
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324\uff0d156=
230\uff0d190=
180\uff0d110=
250\uff0d200=
398\uff0d190=
278\uff0d178=
450\uff0d220=
400\uff0d199=
321\uff0d320=
159\uff0d100=
123\uff0d107=
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