Decimals (subtracting)

Solve: 14.02 - (-3.985)

18.005

Solve: -8.34 - 12.076

-20.416

Evaluate: 0.0045 - 0.021

-0.0165

Evaluate: 100.1 - 9.909

90.191

Solve: 3.14 - 1.592 - 0.053

1.495

Evaluate: -0.072 - (-0.45)

0.378

Solve: 15.4 - 2.87 - 6.003

6.527

Evaluate: 0.1 - 0.01 - 0.001 - 0.0001

0.0889

Solve: -12.5 - (-4.75) - 3.2

-10.95

Evaluate: 25.05 - 17.892

7.158

Subtract: (3.2 × 10⁻³) - (4.5 × 10⁻⁴)

2.75 × 10⁻³

Subtract: (1.5 × 10⁵) - (8.5 × 10⁴)

6.5 × 10⁴

Subtract: (7.1 × 10⁻²) - (9.8 × 10⁻³)

6.12 × 10⁻²

Subtract: (2.4 × 10³) - (1.9 × 10²)

2.21 × 10³

Subtract: (5.0 × 10⁻⁴) - (1.2 × 10⁻⁵)

4.88 × 10⁻⁴

Subtract: (8.3 × 10⁶) - (7.4 × 10⁵)

7.56 × 10⁶

Subtract: (4.6 × 10⁻¹) - (8.9 × 10⁻²)

3.71 × 10⁻¹

Subtract: (9.0 × 10⁴) - (9.0 × 10³)

8.1 × 10⁴

Subtract: (1.05 × 10⁻²) - (9.5 × 10⁻³)

1.0 × 10⁻³

Subtract: (6.2 × 10³) - (5.8 × 10¹)

6.142 × 10³

Simplify: 4.5x - 2.85x

1.65x

Simplify: 1.2y² - 0.85y²

0.35y²

Simplify: (3.4a - 1.2b) - (1.75a - 0.65b)

1.65a - 0.55b

Simplify: 0.05x² - 0.12x²

-0.07x²

Solve for y: y + 3.45 = 1.12

y = -2.33

Solve for x: 5.2 - x = 8.05

x = -2.85

Simplify: (0.8x - 1.5) - (1.2x - 2.35)

-0.4x + 0.85

Find the difference: (7.3a + 2.1) - (4.85a - 1.05)

2.45a + 3.15

Simplify: 0.1x³ - 0.035x³

0.065x³

Solve for z: 0.04 - z = 0.155

z = -0.115

A length is 12.4 cm (to 1 d.p.). Find the lower bound of 12.4 - 3.15 where 3.15 is exact.

9.2 cm

A mass is 5.82 kg (to 2 d.p.). Find the upper bound of 5.82 - 2.4 where 2.4 is exact.

3.425 kg

Find the difference between the upper and lower bounds of x = 14.3 (to 1 d.p.).

0.1

A square has side length 4.5 cm. If each side decreases by 0.75 cm, find the new perimeter.

15 cm

The area of a circle is 15.42 cm² and another is 9.8 cm². Find the difference in area.

5.62 cm²

Find the difference between 1.25 and its reciprocal 0.8.

0.45

Subtract the square of 0.3 from the square of 0.7.

0.4

Calculate the difference between √2.25 and √1.44.

0.3

Find the difference between the mean of {1.5, 2.7, 4.2} and its median 2.7.

0.1

A tank has 45.2 liters. 18.75 liters leak out, then 3.4 liters evaporate. Remaining volume?

23.05 liters