Secondary tillage refers to the tillage operations carried out after primary tillage, which is usually done to break up the soil and prepare it for planting. Cultivators are typically used for seedbed preparation, weed control, and soil aeration after the primary tillage has already been completed.
1220 ÷ 61 ÷ 5 + 450 of 20% - 70 = √ ?
654.056 + 28.9015 × 44.851 – 43.129 =?
[4(2/3) + 5(1/6)] × 45% of 240 = ?
675 ÷ 15 + 225 – 18 × 6 = ?
{(? × 15) + (? × 45)} – 120 = 360
Determine the simplified value of the expression: 12 × 15 - 20 + 15 + 12 - 18 + 3 × 4 + 18.
240 × 2.5 + 65 × 2/13 = ?2 - √225
(? + 16) × 12 + 25% of 840 = 252 + 5
2850 ÷ 2.5 - ? × 42 = 300
6 0 - 20 [8 + 12 {8-8 (20-12)+20}-40] ÷ 16 =?
