Use square roots, reciprocal and square tables to evaluate to 4 significant figures the expression; (0.06458)^(1/2) + (2/(0.4327))3

Kutoka jedwali la namba za ujazo, $3.75^3 = 52.734375$.
Hivyo, $(0.375)^3 = (3.75 \times 10^{-1})^3 = 52.734375 \times 10^{-3} = 0.052734$. (Tunatumia tarakimu muhimu 5 kwa usahihi wa kati)

Hii ni sawa na $3 \times \frac{1}{0.052734}$.
Kutoka jedwali la namba tete, $\frac{1}{0.052734} \approx 18.9636$.
Hivyo, $3 \times 18.9636 = 56.8908$.

Hii ni sawa na $2 \times \frac{1}{981.7}$.
Kutoka jedwali la namba tete, $\frac{1}{981.7} \approx 0.00101864$.
Hivyo, $2 \times 0.00101864 = 0.00203728$.

$56.8908 - 0.00203728 = 56.88876272$.

Hii ni sawa na $\sqrt{0.06458}$.
Tunaweza kuandika $\sqrt{0.06458} = \sqrt{6.458 \times 10^{-2}} = \sqrt{6.458} \times 10^{-1}$.
Kutoka jedwali la mizizi ya mraba, $\sqrt{6.458} \approx 2.54126$.
Hivyo, $\sqrt{0.06458} \approx 2.54126 \times 10^{-1} = 0.25413$. (Tunatumia tarakimu muhimu 5 kwa usahihi wa kati)

Kutoka jedwali la namba tete, $\frac{1}{0.4327} \approx 2.31107$.

Kwanza, zidisha matokeo ya Hatua ya 2 kwa 2: $2 \times 2.31107 = 4.62214$.
Kisha, tafuta ujazo wa 4.62214.
Kutoka jedwali la namba za ujazo, $(4.62214)^3 \approx 98.728$. (Tunatumia tarakimu muhimu 5 kwa usahihi wa kati)

$0.25413 + 98.728 = 98.98213$.