【简答题】能用简便方法的用简便方法. (1)6502+672÷28×17 (2)3.4×2.79+0.21×3.4 (3)( 5 12 + 1 9 + 3 8 )×72 (4) [( 1 2 - 1 5 )÷ 3 4 ]÷ 3 5 .
【多选题】What are the symptoms of coronavirus?
【多选题】What are the symptoms of coronavirus?
D.
have difficulty breathing
【简答题】能用简便方法的要用简便方法. ①58-16÷ 4 5 ② 2 9 - 6 15 × 2 9 ③62.5÷2.5÷4 ④8160÷24-36×2.5 ⑤ 36×( 5 6 + 1 12 - 1 3 ) ⑥ 3.5÷[1-(0.4+ 1 4 )] .
【简答题】我会用简便方法计算. 3 4 × 1 5 + 3 4 × 2 5 +0.75× 3 5 - 3 4 .
【简答题】用简便方法计算. 5 4 × 1 2 × 3 5 3 7 × 1 5 × 7 9 18× 2 3 × 5 6 20 51 × 17 30 ×9 11 36 ×27× 4 33 1 5 6 × 2 3 × 3 22 .
【简答题】用简便方法计算. 25×1.25×32 17.625-(4.4+7 5 8 ) ( 1 15 + 2 17 )×15×17.