Question

Понаблюдай,как провели вычисления. Какие законы арефмитических действий при этом ты использовали? 36*27+27*64=36*27+64*27=(36+64)*27=100*27=2700 Вычисли похожим способом 126*48+48*74=? 62*123-23*62=? 55*36+130*64+36*75=? 67*16+40*84-16*27=?

Answer 1

1) 48*(126+74)=48*200= 9600
2)62*(123-23)= 62*100=6200
3)36*(55+75)+130*64= 36*130+130*64=130*(36+64)=130*100= 13000
4)16*(67-27)+40*84=16*40+40*84=40*(16+84)=40*100= 4000

Answer 2

Calculation Process and Arithmetic Laws Used

To calculate the given expressions, let's break down the steps and apply the arithmetic laws:

1. 36 * 27 + 27 * 64: - We can start by factoring out the common factor of 27: (36 + 64) * 27. - Using the distributive property, we can simplify further: 100 * 27. - Finally, we can calculate the product: 2700.

2. 126 * 48 + 48 * 74: - Similar to the previous example, we can factor out the common factor of 48: (126 + 74) * 48. - Applying the distributive property, we get: 200 * 48. - Calculating the product gives us: 9600.

3. 62 * 123 - 23 * 62: - There are no common factors to factor out, so we can directly calculate the products: 7626 - 1426. - Subtracting the two values gives us: 6200.

4. 55 * 36 + 130 * 64 + 36 * 75: - Again, there are no common factors to factor out, so we can calculate the products: 1980 + 8320 + 2700. - Adding the three values together gives us: 13000.

5. 67 * 16 + 40 * 84 - 16 * 27: - We can calculate the products: 1072 + 3360 - 432. - Adding and subtracting the values gives us: 3000.

Summary of Calculations:

1. 36 * 27 + 27 * 64 = 2700 2. 126 * 48 + 48 * 74 = 9600 3. 62 * 123 - 23 * 62 = 6200 4. 55 * 36 + 130 * 64 + 36 * 75 = 13000 5. 67 * 16 + 40 * 84 - 16 * 27 = 3000

Please let me know if there's anything else I can help you with!