![24道简便运算。](/zb_users/upload/2023/10/a0cbc63866a711eeb3615254000ebf90.jpeg)
28x18+18x72 67+42+33+58 125x16
50x(2x4)x25 7x8x3x125 26x103
501x12 25x(40+8) 99x64+64
49+49x49 98+303 77x4x5
202x13 27x99 55x25+25x45
4.8x0.25 1.5x105 7.2x1.25
3.82+2.9+0.18+9.1 25x24+16x25 2.4x2.9+0.24x7.1
2.6x10.1 4.4x2.5 4x(25x65+25x28)
24道简便运算。
3/14 ×× 2/3 + 1/6 1/5 × 2/3 + 5/6 9/22 + 1/11 ÷ 1/2 5/3 × 11/5 + 4/3 45 × 2/3 + 1/3 × 15 7/19 + 12/19 × 5/6 1/4 + 3/4 ÷ 2/3 29. 8/7 × 21/16 + 1/2 101 × 1/5 – 1/5 × 21 50+160÷40 (58+370)÷(64-45) 120-144÷18+35 347+45×2-4160÷52 (58+37)÷(64-9×5) 95÷(64-45) 178-145÷5×6+42 420+580-64×21÷28 812-700÷(9+31×11) (136+64)×(65-345÷23) 85+14×(14+208÷26) (284+16)×(512-8208÷18) 120-36×4÷18+35 (58+37)÷(64-9×5) (6.8-6.8×0.55)÷8.5 0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6