4) Schrijf de getallen als machten van 10 en bereken \( \frac{0,0017 \times 85000000}{0,00068: 0,0000004}= \)

Matt is trying to round 41.449 to 1 decimal place. a) Write a sentence to explain what he has done wrong. b) What is 41.449 rounded to 1 decimal place? \( \begin{aligned} 41.449 & =41.45 \text { to } 2 \text { d.p. } \\ & =41.5 \text { to } 1 \text { d.p. }\end{aligned} \)

2. \( \frac{2.362 \times 1.76}{1.46 \times 0.785} \) Ans it lies btw

A good grade of brass contains \( 60 \% \) copper, \( 1 \% \) tin and \( 39 \% \) zinc. If there are 240 lb of brass, determine the weight of each metal used.

What is the largest whole numbe that gives an answer of 500 when rounded to 1 significant figure?

2 ¿cual es el residuo del numero \( n=1^{5}+2^{5}+3^{5}+\cdots+100^{5} \) al dividirse por \( 4 ? \)