A simple method for the determination of (- 36) × 19 and 7 / 18

A simple method for the determination of (- 36) × 19 and 7 / 18

=-36 × (11 / 20-18)
=-36 × 20 + 11 / 18 of 36 × 18
=-720+22
=-698

The simple method is 5.6 × 3 and 3 / 5 + 0.19 × 36 + 2 and 1 / 2 × 3.6=

The original formula = 5.6x3.8 + 0.19x36 + 2.5x3.6 = 5.6x3.8 + 1.9x3.6 + 2.5x3.6 = 5.6x3.8 + (1.9 + 2.5) x3.6 = 5.6x3.8 + 4.4x3.6 = (10-4.4) x3.8 + 4.4x3.6 = 10x3.8-4.4x3.8 + 4.4x3.6 = 38 + 4.4x (- 3.8 + 3.6) = 38-0.88 = 37.12

Please use a simple method to calculate, [16.5 + 7.2x55/7x (12.5 / 100-1 / 8)] / 15 / 19

[16.5+7.2x55/7x(12.5/100-1/8)]/15/19
=[16.5+7.2x55/7x(0.12/100-0.125)]/15/19
=16.5÷15/19
=15x1.1÷15/19
=1.1x19
=1.1x20-1.1
=22-1.1
=20.9
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(3 and 3 / 11 × 25.8-3 and 3 / 11 × 16.76 + 18 / 35 × 19.6) × (1.25-7 / 12 + 5 / 36) × 1 / 29
It's simple and fast
It is not easy to calculate

(3 and 3 / 11 × 25.8-3 and 3 / 11 × 16.76 + 18 / 55 × 19.6) × (1.25-7 / 12 + 5 / 36)
=（36/11×25.8-36/11×16.76+36/11×1.96）×（2/3+5/36）
=36/11×（25.8-16.76+1.96）×29/36
=36/11×11×29/36
=29

40 * 39 and 39 / 40

40 × 39 and 39 / 40
＝40×39＋40×39/40
＝40×39＋39
＝39×41
＝1599

Simple calculation of 11.11 times 6666 plus 77.78 times 3333

11.11×6666+77.78×3333
=11.11×3333×2+77.78×3333
=22.22×3333+77.78×3333
=（22.22+77.78）×3333
=100×3333
=333300

A simple calculation of 5 / 77 × 78

Original formula = (78-1) X5 / 78
=78x5/78-1x5/78
=5-5/78
=4 and 73 / 78

Simple calculation of 39 * 5 - + 39 * 3 + 78

39×5+39×3+39×2=39（5+3+2）=390

(0.78 + 0.65) divided by 0.13
Simple calculation

(0.78 + 0.65) divided by 0.13
=0.78÷0.13+0.65÷0.13
=6+5
=11

Urgent 10: () = 0.625 = () molecule 15 = () divided by 32 = ()% know tell next thank you

10: (16) = 0.625 = (24) molecule 15 = (20) divided by 32 = (62.5)%. If you know, please tell me. Thank you