如图，两个大小不等的正方形拼成一个图形，已知小正方形的边长是4厘米，阴影部分的面积是30平方厘米，求空白部分的面积是多少？．
直接写得数． 20×=÷=×=÷6=×12=×=
直接写得数．×=﹣=×=×=÷=÷=÷=÷=
直接写得数÷=×=﹣=×1.4= 12×= 24×=+= 0÷=
直接写得数== 3÷========
直接写得数．×16= 12÷= 0.3×=×÷=÷= 0×+=×÷×=
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÷
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×
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÷6=
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×
﹣
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×
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×
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÷
=
÷
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÷
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÷
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÷
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×
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﹣
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×1.4=
= 24×
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+
= 0÷
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= 3÷
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=
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=
×16= 12÷
= 0.3×
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×
÷
÷
= 0×
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=
×
÷
×
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