Question

7200 : (2 + 7) + (140 – 90) 8 600 · 100                 105 600 : 10       70 + 350 : 7 · (10 + 990) 56 000 : 1 000               916 · 1 000 1.Сравни (>, <, =). 574 215 … 573 215 6 м 7 см … 6 м 7 дм                                             37 614 … 31 674 9 км  3 м … 9 030 м                      

Answer 1

7200:(2+7)+(140-90)=850
8600•100=860000
70+350:7•(10+990)=50070
56000:1000=56
916•1000=916000

574215>573215
6м 7см>6м 7дм
37614>31674
9км 3м<9030м

Answer 2

Let's solve each of the given expressions step by step:

1. 7200 : (2 + 7) + (140 – 90) First, perform the operations inside the parentheses: 7200 : 9 + 50 Now, divide 7200 by 9 and add 50: 800 + 50 = 850

2. 8 600 · 100 Multiply 8,600 by 100: 860,000

3. 105 600 : 10 Divide 105,600 by 10: 10,560

4. 70 + 350 : 7 · (10 + 990) Perform the operations inside the parentheses: 70 + 350 : 7 · 1000 Now, perform the division and multiplication: 70 + 50,000 = 50,070

5. 56 000 : 1 000 Divide 56,000 by 1,000: 56

6. 916 · 1 000 Multiply 916 by 1,000: 916,000

Now, let's compare the given numbers:

1. 574,215 … 573,215 To compare these two numbers, compare the leftmost digits (hundreds place). Since both have 5 in the hundreds place, move to the next digit (tens place). In the tens place, 7 is greater than 3, so the number 574,215 is greater than 573,215.

2. 6 m 7 cm … 6 m 7 dm Convert cm to dm: 1 m = 10 dm So, 6 m 7 cm = 6 m + 7 cm = 6 m + 0.7 m = 6.7 m Since 6.7 m is equal to 6 m 7 dm, the two lengths are equal.

3. 37,614 … 31,674 To compare these two numbers, compare the leftmost digits (tens of thousands place). 3 is less than 3, so move to the next digit (thousands place). 7 is greater than 1, so the number 37,614 is greater than 31,674.

4. 9 km 3 m … 9,030 m Since 1 km = 1000 m, 9 km = 9,000 m So, 9 km 3 m = 9,000 m + 3 m = 9,003 m Since 9,003 m is greater than 9,030 m, the first expression (9 km 3 m) is less than the second expression (9,030 m).