Before proceeding to the solution of examples and problems be sure to read the theoretical part of the lesson
Eventual decimal fractions
1. Write 0.57 as a fraction.
а) 57/10; b) 57;
c) 57/100; d)
57/1000.
2. Write 6/10 as a decimal.
а) 0,6;
b) 6;
c) 0,06;
d) 60.
3. Restate 3.6
as an improper fraction and a mixed number.
а) 361/10; b)
36/100;
c) 36/10; d) 36/10.
4. Restate 45/8 as a decimal.
а) 4.62;
b) 4.625;
c) 4.652;
d) 46.25.
5. Write <, >, or = to make the
statement true.
0.99 ○ .009
а) >; b) =;
c) <; d)
≠.
6. Write the following number using scientific notation.
1,687,483.0043.
а) (1×106) + (6×105) + (8×104) + (7×103) + (4×102) +
(8×10) +
(3×1) + (4×10-2) + (3×10-4);
b) (1×106) + (6×105) + (8×104) + (7×103) + (4×102) +
(8×10) +
(3×1) + (4×10-3) + (3×10-4);
c) (1×106) + (6×105) + (8×104) + (7×103) + (4×102) + (8×10) + (3×1) + (4×10-1) + (3×10-2);
d) (1×106) + (6×105) + (8×104) + (7×103) + (4×102) + (8×10) + (3×1) + (4×10-2) + (3×10-3).
7. Restate the number expanded form:
4,587,902.453.
а) (4×1,000,000) + (5×100,000)
+ (8×10,000)
+ (7×1,000)
+ (9×100)
+ (2×1) + (4×0,1) + (5×0,01) + (3×0,001);
b) (4×1,000,000) + (5×100,000) + (8×10,000) + (7×1,000) + (9×100) + (2×10) + (4×0,1) + (5×0,01) + (3×0,001);
c) (4×1,000,000) + (5×100,000) + (8×10,000) + (7×1,000) + (9×100) + (2×1) + (4×0,1) + (5×0,01) + (3×0,0001);
d) (4×1,000,000) + (5×100,000) + (8×10,000) + (7×1,000) + (9×100) + (2×10) + (4×1) + (5×0,01) + (3×0,001).
8.
Restate the number written form:
4,587,902.453.
а) four
millions five hundred eighty seven thousands ninety two units four hundred
fifty three thousandth;
b) four millions five hundred eighty seven
thousands nine hundred two units four hundred fifty three hundredth;
c) four millions five hundred eighty seven
thousands nine hundred twenty units four hundred fifty three thousandth;
d) four millions five hundred eighty seven
thousands nine hundred two units four hundred fifty three thousandth.
9.
Write <, >, or = to make the statement true.
62.381 ○ 62.831
а) >; b)
≠;
c) <; d) =.
10. Write <,
>, or = to make the statement true.
30.249 ○ 30.429
а) ≠;
b) <;
c) =;
d) >.
11. Write <,
>, or = to make the statement true.
.004 ○ 34.00
а) =;
b) >;
c) ≠;
d) <.
12. In 1.609,
the number 1 is in which place?
а) 1000;
b) 1;
c) 100;
d) 10.
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