Question

3.4×3.3+9.9×2.2怎么简算？

Answer 1

3.4x3.3+9.9x2.2
=3.4x3.3+3.3x3x2.2
=3.4x3.3+3.3x6.6
=3.3x（3.4+6.6）
=3.3x10
=33

Answer 2

3.4×3.3+9.9×2.2
=3.4×3.3+3.3×3×2.2
=3.3×（3.4+6.6）
=3.3×10
=33

Answer 3

9.9＝3.3x3
所以原式等于3.4x3.3+3.3x3x2.2＝(3.4+3x2.2)x3.3＝(3.4+6.6)x3.3＝3.3x10＝33。

Answer 4

依题意可得，
3.4×3.3+9.9×2.2
=3.4×1.1×3+1.1×2×9.9
=1.1×(3.4×3+2×9.9)
=1.1×(10.2+19.8)
=1.1×30
=33

Answer 5

3.4×3.3+9.9×2.2
＝3.4×3.3＋3.3×6.6
＝(3.4+6.6)×3.3＝10×3.3＝33