I have never heard of them…..I’ve searched the web to no avail. Can you email your child’s teacher and ask for an explaination, else, I would write them a note and ask for clarification.

ok i’m assuming which you don’t comprehend the tactic of adjusting to diverse measurements, so i will practice you: you need to bear in ideas: Kilo Hecto Deca Unit Deci Centi Milli (you need to bear in ideas those interior the CORRET ORDER, the way I bear in ideas that’s King Henry does not frequently Drink Chocolate Milk) Kilo is properly worth 1000, Hecto is properly worth one hundred, Deca is properly worth 10, Unit is properly worth a million Deci is properly worth (.a million), Centi is properly worth (.01) and Milli is properly worth (0.01) something has one letter (on the tip is assessed under the Unit area) So, you have 678g and you like to pass from instruments to kilograms so interior the order of prefixes (KHDUDCM) you initiate on the U and pass to the left until you attain the ok. you need to have long gone back 3 areas. so which you’re taking 678. (entire numbers have decimal pts on the tip of the huge style) 678. and pass the decimal element to the left (3 areas) considering the fact which you went to the left to pass to Kilograms. in case you had to pass to milligrams you may pass to the perfect because of the fact this is to the perfect of the place your began. So pass the decimal 3 areas on your left and you get .678kg and that’s the respond. Sorry if i’m no longer sparkling. i’m no longer a instructor so i can’t fairly make it comprehensible.