In the sentence, the usage of the word 'less' is not correct. Less refers to a commodity such as sand or water, that you cannot count individually whereas fewer refers to items that can be counted individually. Hence in this sentence, it should be fewer instead of less.
(100.01% of 44.89) ÷ 14.98 = √? - √48.98
(44/25) ÷ (154/199.5) × 419.91 = ? – (11.11)3
20.02% of (95.96 × 104.01 – 56.02 × 64.04) – ? = 12.02 × 39.96 + 103.03
? = 500.24 + 1013.97 – 7.992
18.22 × 11.99 + 154.15 = ?
? = 22.08 + 13.99 × 22.07
12.023 + 32.05 × 16.08 – 84.04% of 2400 = 56.06% of ?
12.03 x 4.21 +19.95% of 300.05 = ?
(11.99)2 + 171.16 + (3.33) 2 = ?2