Simplification in maths

Decimal Based Simplification in maths –

Q55. 15 + 6.3 ÷ 7 – 3 × 1.3 – 2

Ans. 10

Q56. 178.01 – [86.23 – {40.22 + (28 – 24)}]

Ans. 136

Q57. 4.7 × 3.6 ÷ 2.3 – 2.1 × 1.9 + 1.8 ÷ 0.6

Ans. 6.36

Q58. 6.4 – 1.7 × 4.9 + 8.5 ÷ 1.7 – 2.2 × 1.5

Ans. -0.23

Q59. 9.3 ÷ 3.1 × 2.6 – 1.5 + 0.8 ÷ 0.2 – 5.9 × 1.4

Ans. 2.04