计算：（1）比大小，要求写出过程：和．（2）如果a△b=4a﹣3b，已知x△（5△2）=46，求x．
直接写出得数====+=== 1÷===
直接写出得数．×16= 10÷= 12÷=×=×=÷3=×=×=
6×=+=×= 3﹣=÷= 1÷=÷=﹣=×14=÷12=
直接写出得数．== 71.83÷8≈ 5.04×9.85≈=== 0.53=
直接写得数======= 60×60%= 2×32==
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和
．
=
=
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+
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=
= 1÷
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×16= 10÷
= 12÷
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×
=
×
=
÷3=
×
=
×
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+
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×
= 3﹣
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÷
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÷
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﹣
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×14=
÷12=
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= 71.83÷8≈ 5.04×9.85≈
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= 0.53=
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= 60×60%= 2×32=
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