# Decimals

**Online Activities for 3rd & 4th Classes**

White Rose Maths - Decimals: a series of lessons, including Tenths as Decimals, Hundredths as Decimals, Writing Decimals, Comparing Decimals, Ordering Decimals and Rounding Decimals.

Matholia - Decimals: A series of video lessons. Third class should focus on decimals to tenths, and fourth class on decimals to hundredths.

Khan Academy - Decimals: in this video and the videos that follow, explore decimal fractions and then answer the practice questions. You can also register for a free Khan Academy account to record your progress and explore other topics.

Happy Numbers - Decimal Fractions: A series of lessons and activities; scroll down to do Module 4 (Fourth Grade)

Maths Frame - Empty Number Line: Practice placing decimal numbers (tenths and hundredths) in the correct position; choose 0-1 in tenths or hundredths initially and then move to the next levels to challenge yourself.

Maths Frame - Compare Numbers on Number Lines: Practice identifying the greater/smaller number; choose decimal numbers.

Caterpillar Ordering: Choose ordering to order numbers with tenths (1 decimal place)

Coconut Ordering: Hit the numbers in order of size. Select 'numbers' and then choose from numbers up to 10, 1 decimal place or 2 decimal places or both.

Hit the Button: a great site for practicing quick-fire questions; options include Number Bonds (make 1 and make 10 with numbers to 1 decimal place), Doubles (to 10, 1 decimal place) and Halves (to 10, 1 decimal place).

Maths Frame - Maths Invaders: Shoot the spaceship with the correct answer and dodge the incoming fire. Select play game and then Fractions to Decimals

Maths Fishing - Times Tables: Practise your multiplication skills, including doubles of decimal numbers. A similar game to this is Archery Arithmetic

Maths Frame - Maths Invaders: Shoot the spaceship with the correct answer and dodge the incoming fire. Select play game and then select from the available options e.g. Addition, Subtraction, Multiplication, Division (which include games with decimal numbers); ; choose your approximate class level/year to play those games.

Rocket Rounding: A multiple choice game with options to round decimals to the nearest whole number. Start with the easier option of having a number line and then try to play the other more difficult option, no number line.

Battleship Numberline: Can you blow up the enemy submarines? This game starts very easy, where you must click the correct fraction on the number line, but then the game progresses in difficulty as the player must work out where a given fraction would be placed on the blank number line. Choose the decimals game.

Place Value Charts: Make a given number by combining the parts that make up the number. Select practice and then either T O . t (1 decimal place, for third class) or T O . t h (2 decimal places, for fourth class) in either column.

I Know It! - Decimals: Scroll down to Decimals (Third Grade) to do any of the activities with tenths (third class) and/or hundredths (fourth class). There are some more advanced decimal activities in the fourth grade section, both in the section on Numbers & Place Value and in the section on Fractions & Decimals.

Splash Learn - Decimals: An assortment of decimal games organised according to US grade levels; third classes could do the games that include tenths only and fourth classes could look at all the Fourth Grade games.

That Quiz: Each of these quizzes have lots of options, on the left hand side, that can be changed to suit the ability of the child. Each time do the set 10 questions, if you get 10 or 9 correct, go up a level; if not stay at that level. Choose from Identify to identify and order decimals (choose decimal options for both on left hand side), Arithmetic for various calculations involving decimals (choose decimal option on left hand side), Inequalities for comparing decimals and/or fractions and Reduce for converting decimals to an alternative form.

Decimals: a selection of games from ixl.com. You can do a number of free quizzes each day without having a subscription. (Please note that the class levels given do not always align accurately with the content of the Irish Primary Curriculum)