1、 1x 1 = 1； 1x 2 = 2； 1x 3 = 3； 1x 4 = 4； 1x 5 = 5； 1x 6 = 6； 1x 7 = 7； 1x 8 = 8； 1x 9 = 9； 2x 1 = 2； 2 x2 = 4； 2x 3 = 6； 2x4 = 8； 2x 5 = 10； 2x 6 = 12； 2x 7 = 14； 2x 8 = 16； 2x 9 = 18； 3x 1 = 3； 3 x2 = 6； 3x 3 = 9； 3 x4 = 12； 3x 5 = 15； 3x 6 = 18； 3 x7 = 2 1； 3×8 = 24； 3x9 = 274x 1=4 .

2、4x 2 = 8； 4x 3 = 12； 4x 4 = 16； 4x5 = 204x6 = 244x7 = 284x8 = 324x9 = 365x 1 = 5； 5x 2 = 10； 5x 3 = 15； 5x4 = 205x5 = 255x6 = 305x7 = 355x8 = 405x9 = 456x 1 = 6； 6x 2 = 12； 6x 3 = 18； 6x4 = 246x5 = 306x6 = 366x7 = 426x8 = 486x9=54 .

3、7x 1 = 7； 7 x2 = 14； 7x 3 = 2 1； 7x4 = 287x5 = 357x6 = 427x7 = 497x8 = 567x9 = 638x 1 = 8； 8 x2 = 16； 8x3 = 248x4 = 328x5 = 408x6 = 488x7 = 568×8 = 64； 8x9 = 729x 1 = 9； 9 x2 = 18； 9x3 = 279x4 = 369x5 = 459x6 = 549x7 = 639×8 = 72 .

The benefits of learning multiplication formula

1, fast calculation ability: multiplication formula is an important tool to speed up mathematical calculation. By mastering the multiplication formula, students can perform mathematical calculations faster and more accurately, without relying on calculators or electronic equipment. This is very helpful to solve problems in daily life and math exams.

2. Improve math self-confidence: Mastering multiplication formula can improve students' math self-confidence. When they can solve multiplication problems quickly, they are more likely to take an active part in math learning and solve more complicated math problems. Learning multiplication formula is helpful to cultivate students' mathematical thinking.

3. Solving practical problems: multiplication formula is the basis for solving various practical problems. From shopping calculation to daily budget, from engineering measurement to scientific experiment, multiplication operation is needed. Learning multiplication formula is helpful for students to apply mathematical knowledge to solve various daily problems.