Question

g. two of these mathematics advances were the idea of _____________, as a number and the _____________, system.

Explanation:

To solve this fill - in - the - blank question about mathematical advances, we can draw on historical knowledge of mathematics:

In the history of mathematics, a very important advance was the concept of zero as a number. Also, the decimal (or Hindu - Arabic numeral) system is a significant mathematical system. Zero was a revolutionary idea as it allowed for a more complete number system, and the decimal system (with digits 0 - 9 and place - value) made arithmetic operations and number representation much more efficient.

Answer:

The first blank can be filled with "zero" and the second blank can be filled with "decimal (Hindu - Arabic numeral)".