Decimal Addition and Subtraction
What is the value place of 5 in 6.8705?
Ten thousandth 萬分位
List all factors of 24.
Reduce the fraction to the simplest form: 24/150
4/25
Order from the greatest to the least.
0.11、0.101、0.001、1
1 > 0.11 > 0.101 > 0.001
List three multiples of 16
16, 32, 48, 64...
Convert the following fractions with common denominator:
25/30, 5/7
35/42, 30/42
or
175/210, 150/210
4.778 + 5.002
9.78
What is the greatest common factor(最大公因數) of 12, 18 and 27?
3
List three equivalent fractions（等值分數） of 6/9.
2/3, 12/18, 18/27.... 60/90
2.2468 + 0.053 =
2.2998
orWatch a videoWhat is the least common multiple of 30, 12, and 6?
60
Order from the greatest to the least.
4/3 、 5/6 、6/9 、7/12
4/3 > 5/6 > 6/9 > 7/12
A bag of cookie weighs 0.825 kg, which is 0.41 kg lighter than a bag of candy. What is the total weight of a bag of cookie and two bag of candy in kg?一包餅乾重0.825kg，比一包糖果輕0.41kg，請問一包餅乾和兩包糖果共重幾公斤?
Candy： 0.825 + 0.41 = 1.235
0.825 + 1.235 +1.235 = 3.295 kg
A: 3.295 kg
Riley notices an identical number of two types of insects in her neighborhood: butterflies and fireflies. She always seems to observe butterflies in groups of 4 and fireflies in groups of 6. What is the smallest number of butterflies that she could have seen?
12
Beibei shares 2 pizza with her four friends. Fangfang shares 1 pizza with two friends. Who can have more pizza, Beibei or Fangfang? 同樣的pizza，貝貝這桌五個人平分2個pizza，芳芳那一桌是三個人平分1個pizza，那一桌的人可以吃比較多pizza？
1/3 = 5/15
2/5 = 6/15
6/15 > 5/15
2/5 > 1/3
A：芳芳那桌