## Decimals Exercise

Do this exercise without using a calculator

1. Write these numbers as decimals:

 a. six tenths b.forty two and five hundredths c. five and five tenths d. fifty six thousandths e. eight thousand and eight thousandths f. three and twenty nine hundredths

2. Write true or false for each one:

a. 0.050 is the same as 0.05
b. 5.12 has 3 decimal places
c. 0.399 is a bigger decimal number than 0.901
d. The value of the 8 in 3.78 is eight hundredths.
e. 2.39 × 100 = 2390

3. Copy the number line below and mark the following decimals (use the letters to mark the place):

 a. 1.2 (A) b. 0.9 (B) c. 1.65 (C) d. 0.05 (D) e. 1.425 (E) f. 0.555 (F)

4. Calculate

 (a) 3.5 + 4.6 (b) 32.1 + 7.6 (c) 20.6 − 10.68 (d) 0.58 + 6.2 (e) 7.8 − 4.1 (f) 243.9 − 59.362 (g) 162.78 + 6.393 (h) 21.79 -1 0.43 (i) 5.62 − 4.39 + 4.39

5. Calculate:

 (a) 0.8 × 10 (b) 15.92 × 1000 (c) 59.83 ÷100 (d) 2.6 x100 (e) 0.16 × 100 (f) 51.29 ÷100 (g) 5.27 × 10 (h) 8.5 ÷ 100 (i) 19.32 ÷ 10 (j) 67.8 × 100 (k) 27.3 ÷10 (l) 0.8 ÷ 1000

6.

 (a) Find the sum of 9.4, 7.35 and 0.75 (b) What is 8514.8 less 3851.6? (c) What is the product of 4.7 and 5.3? (d) How many pieces of fence post 13.2 cm long can be cut from a plank of wood 134.8 cm in length? (e) What is the perimeter of a square of side length 4.6 m? (f) Find the cost of 25 kg of bananas at \$1.85 per kg.

7. Calculate:

 (a) 6.6 x 2.4 (b) 8.65 ÷ 0.5 (c) 0.39 x 5 (d) 2.7 x 6.4 (e) 8.32 ÷ 0.08 (f) 5.72 (g) 6 x 0.3 + 4 x 0.5 (h) 67.2 ÷ 0.12 (i) 3.12 + 3.22