| 1 | add | v. to put one number together with another [eg: 2 plus 2] - addition n. |
| 2 | billion | n. 1,000,000,000; one thousand million; 109 |
| 3 | divide | v. 2 ÷ 2 [is expressed as] two divided by two - division n. |
| 4 | equal | v. to be the same as [eg: 2 + 2 equals 4] |
| 5 | giga | one billion |
| 6 | hundred | n. 100; 102 |
| 7 | kilo | one thousand - k, K abbr. |
| 8 | mega | one million - M abbr. |
| 9 | million | n. 1,000,000; one thousand thousand; 106 |
| 10 | minus | p. 2 - 2 [is expressed as] two minus two |
| 11 | multiply | v. 2 x 2 [is expressed as] two multiplied by two - multiplication n. |
| 12 | plus | p. 2 + 2 [is expressed as] two plus two |
| 13 | square | v. to multiply a number by the same number [eg: 3 squared = 9] |
| 14 | square root | n. number that multiplied by itself gives a certain number [3 is the square root of 9] |
| 15 | subtract | v. to deduct one number from another [eg: 2 minus 2] - subtraction n. |
| 16 | thousand | n. 1,000; 103 |
| 17 | times | p. 2 x 2 [is expressed as] two times two - see multiply |
| 18 | to the power of | multiplication of a number by itself [eg: 2 to the power of 3 = 8] |
| 19 | trillion | n.1,000,000,000,000; a million million; 1012 |
| 20 | zero | n. 0; oh; nought |
