11377 use the rounding method to keep the approximate value of two significant numbers There is also a question: use scientific counting method to express 89900000, and keep two significant numbers

11377 use the rounding method to keep the approximate value of two significant numbers There is also a question: use scientific counting method to express 89900000, and keep two significant numbers

The fourth power of 11377 ≈ 1.1 × 10
89900000 = 7 power of 9.0 × 10

In 2003, China's gross domestic product (GDP) was 11669.4 billion yuan. Three significant figures are retained by the rounding method, and about 1.5 billion yuan is expressed by scientific notation______ 100 million yuan

116 694 = 1.16694 × 105 ≈ 1.17 × 105. A: it is about 1.17 × 105 billion yuan in scientific notation

Use the rounding method to approximate the following numbers
1. 5478600 (accurate to thousands)
2. 4.897 (accurate to decile)
3. 00406 (two significant digits reserved)
4. 3.68 * 10 ^ 5 (accurate to hundreds)

1. 5478600 (accurate to thousands) = ≈ 5.479 × 10 ^ 6
2. 897 (accurate to decile) ≈ 4.9
3. 00406 (keep two significant digits) 0.0041
4. 3.68 * 10 ^ 5 (accurate to hundreds) 3.680 * 10 ^ 5