45,000,890 = 4.5000890 x 10^7
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To write 14 hundreds, 5 thousands, 8 tens in standard form, you would write it as 14,500 + 80 = 14,580.
10 000 000
40000 + 1600 + 30
1900 190 + 19 -------- 2109
410 tens in a standard form is 4.1 × 103