1.3.26×4.5+5.2×3.26+9.7×6.74
=3.26x(4.5+5.2)+9.7×6.74
=3.26x9.7+9.7×6.74
=9.7x10=97
2.15.8×5.8+4.2×4.2+11.6×4.2
=4.2x(4.2+11.6)+15.8×5.8
=4.2x15.8+15.8x5.8
=15.8x10
=158
1、3.26×4.5+5.2×3.26+9.7×6.74
2个回答
相关问题
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简便运算的数学题1、3.26×4.5+5.2×3.26+9.7×6.742、15.8×5.8+4.2×4.2+11.6×
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用简便方法计算：7.74×（2.8-1.3）+1.5×2.26．
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用简便方法计算：7.74×（2.8-1.3）+1.5×2.26．
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42× 9 28 = 11× 9 44 = 3 13 × 26 37 = 5 6 × 8 45 = 3 5 × 1 4
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列竖式计算下面各题．（1）7.5×26= （2）0.75×26= （3）0.075×26= （4）0.36×5= （5）
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直接写得数：3/14×2/26=?1/7×21/24=?1/4×1/6=?2/3×1/7=?4/6×2/3=?9/8×6
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4×5+5×6+6×7+.+26×27 简便计算
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直接写出得数．6× 1 7 = 4 5 × 3 4 = 11 26 × 13 22 = 3 4 × 1 2 = 1 10
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1+2+3+4+5+6+7+8+9+10×10+19+26+76=