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Mathematics is the door and key to the sciences. ~ Roger Bacon

Mathematics is the queen of the sciences and number theory is the queen of mathematics. ~ Gauss

When you can measure what you are talking about and express it in numbers, you know something about it. ~ Lord Kelvin

Pure mathematics is, in its way, the poetry of logical ideas. ~Albert Einstein

The advancement and perfection of mathematics are intimately connected with the prosperity of the State. ~Napoleon

Sample SMaths Challenge Question for Category Primary/Year 6

### Answer with solution:

### After 6 hours,

### Distance Jason travelled

### = 6 hours x 75km/h

### = 450km

### Distance Melvin travelled

### = 870km - 450km

### = 420km

### Melvin's average speed

### = 420km ÷ 6 hours

### = 70km/h

### Melvin's average speed is 70km/h.

Town A and Town B were 870km apart. Jason left Town A for Town B and travelled at an average speed of 75km/h. At the same time, Melvin left Town B for Town A. The two of them met 6 hours later. Find Melvin’s average speed.

a) 65km/h c) 80km/h

b) 70km/h d) 85km/h