Traditional Culture Encyclopedia - Photography and portraiture - Beijing Normal University Edition Grade Five Mathematics Textbook Page 27 Answer (Urgent)
Beijing Normal University Edition Grade Five Mathematics Textbook Page 27 Answer (Urgent)
2 、( 6.5× 10.5+ 10.5×3.8)×2 = 10.5×(6.5+3.8)×2+2 16.3(cm? )
3 、( 54×95+50×95)×2+54×50=22460(cm? )
4、3×3×5=45(dm? )
5、3.5×3+(3.5×3+3×3)×2-4.5=45(m? )
Step 6: Choose ①
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