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Math

 Name _____________________________ Date ___________________
Math
Write each number in standard form.
 1 two hundred ninety million, one hundred ten thousand, four hundred eight
 2 six hundred forty-five million, eight hundred thousand, seven hundred eighty-one
 3 40,000,000 + 9,000,000 + 400,000 + 20,000 + 7,000 + 100 + 80 + 5
 4 90,000,000 + 8,000,000 + 700,000 + 30,000 + 6,000 + 500 + 70 + 2
 5 2 millions 2 ten thousands 8 thousands 4 tens 5 ones
 6 30,000,000 + 2,000,000 + 900,000 + 40,000 + 2,000 + 100 + 90 + 9

Write each number in two other ways.
 7 8 millions 5 hundred thousands 9 ten thousands 8 thousands 1 hundred 4 tens 4 ones
 8 400,000,000 + 6,000,000 + 800,000 + 20,000 + 8,000 + 600 + 10 + 3
 9 fifty-seven million, nine hundred seventy-one thousand, eight hundred one
 10 661,785,888

Write the place and the value of the underlined digit.
 11 5,900,451
 12 921,060,232
 13 2,748,748
 14 783,239,746
 15 96,775,512
 16 47,000,207
 17 578,097,534
 18 6,077,606

 Key #2
Write the value of .
 19 millions 4 hundred thousands 6 ten thousands 5 thousands 2 hundreds 4 tens = 9,465,240
 20 70,000,000 + 5,000,000 + 700,000 + 80,000 + 3,000 + + 80 + 6 = 75,783,386
 21 700,000,000 + 80,000,000 + 5,000,000 + 200,000 + 10,000 + 7,000 + 200 + 80 + = 785,217,285
 22 60,000,000 + 6,000,000 + 600,000 + 60,000 + + 900 + 80 + 7 = 66,661,987

Write each number in standard form.
 23 80,000,000 + 4 + 300,000 + 500,000,000 + 40 + 5,000,000 + 1,000 + 20,000
 24 2 ten millions 9 ten thousands 2 thousands 4 hundreds 7 ones 9 millions 3 hundred millions
 25 4 + 40 + 900 + 20,000 + 5,000,000 + 300,000 + 3,000
 26 seven million, five hundred forty-two thousand, eighty-three
 27 ninety-three million, one hundred thirty-three thousand, five hundred forty-four
 28 2 ten millions 6 hundred thousands 6 tens 6 ten thousands 9 ones 7 millions 2 hundreds 3 thousands

Write the value of .
 29 5,000,000 + 60,000,000 + 60 + 2 + 90,000 + 200 + 900,000 + 800,000,000 + = 865,994,262
 30 50,000,000 + 5,000 + + 40 + 500,000 + 1 + 50,000 + 500 = 52,555,541
 31 5 thousands 4 tens 4 hundreds 1 million 6 ten thousands 7 ones hundred thousands = 1,865,447
 32 9 hundreds 2 hundred millions ones 5 tens 2 ten millions 6 thousands 9 millions = 229,006,958

 Key #2
Write each number in expanded form using exponents.
 33 571,705,463
 34 24,095,458
 35 827,432,250
 36 15,968,322
 37 8,969,482
 38 8,192,049
 39 12,323,608
 40 4,027,282

Write each number in standard form.
 41 (2 × 107) + (4 × 106) + (4 × 105) + (4 × 104) + (1 × 103) + (2 × 101) + (8 × 100)
 42 (9 × 100,000,000) + (4 × 10,000,000) + (2 × 1,000,000) + (7 × 100,000) + (8 × 10,000) + (8 × 1,000) + (6 × 100) + (9 × 10) + (6 × 1)
 43 nine million, seven hundred sixty-three thousand, five hundred nineteen
 44 (5 × 108) + (7 × 107) + (4 × 106) + (4 × 105) + (7 × 104) + (2 × 103) + (4 × 101) + (5 × 100)
 45 (8 × 100,000,000) + (8 × 10,000,000) + (6 × 1,000,000) + (4 × 100,000) + (1 × 1,000) + (3 × 100) + (6 × 10) + (7 × 1)
 46 50,000,000 + 500,000 + 80,000 + 6,000 + 200 + 40 + 2