7900

Solve the problem:

According to the rounding rule, a number is accurate to a hundred. Look at the numbers on these dozens of digits. The decimal digit is 6 greater than 4. If you want to recite it, then this number is about 7900.

How much is 380x9 approximately equal to 380x9 ≈ 3800 in primary school mathematics?

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How much is primary school math 3880? 3880≈3900 (accurate to the hundred) 3880≈4000 (accurate to the thousand).

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Primary school mathematics 747 is roughly equal to how much is reserved to ten places, 747≈750.

Keep it at 100,747 ≈ 700

How much is primary school math 3060? According to the reserved digits, if it is accurate to thousands, it is about 3 100, and if the mantissa after ten thousand digits is omitted, it is about zero thousand.

Elementary school math 3060 is about 3 100.

According to rounding, 6>5. Forward 1.0+ 1 = 1.

So 3060≈3 100

How much is primary school math 4 14×6? 4 14×6

≈400×6

=2400

How much is primary school mathematics 204+ 198? It can be seen that 204 is rounded to 200,

And 198 is rounded to 200.

The total result is 400.

Note that rounding is often used in the estimation of primary school mathematics.

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How many elementary school math answers are 44+44?

It is approximately equal to 1900.

Solve the problem:

44X44= 1936, according to the rounding rule, a number is accurate to hundreds, and ten digits are less than 5 by 3, so this number is about 1900.