We’ve been learning about arrays in maths!
An array is a neat way of showing objects in rows and columns. It helps us see and count equal groups easily. For example, 3 rows of 4 is the same as 3 × 4 = 12!
Arrays help us understand multiplication better because they show us how numbers are grouped. They also help us solve problems faster and get better at our times tables!
Place value is important in maths because it helps us understand how numbers work. It shows us that the position of a digit in a number changes its value—for example, in 25, the 2 means "two tens" (20), and the 5 means "five ones" (5). This helps us with counting, adding, subtracting, and even bigger maths like multiplying and dividing. Knowing place value makes it easier to work with numbers and solve problems in everyday life!
Place value partitioning is breaking a number into its parts to show what each digit is worth. For example, in 47, the 4 is really 40 (four tens), and the 7 is just 7 (seven ones). So, 47 can be split into 40 + 7. This helps us understand numbers better and makes adding, subtracting, and other maths easier!
Let's recap what we already know about Place Value partitioning. We can do this to solve addition problems, and today we will start using it to solve subtraction problems?
What do you think this would look like?
a. Ethan played in the waves with 36 swordfish. Then 14 swam off. How many swordfish were left?
b. There were 58 crabs wanting to join in with the swordfish. 16 of the crabs were babies. How many were adults?
c. Some seahorses came to have a race with Ethan. 79 of them entered the race. Only 43 finsihed the race. How many didn't finish?
Access the slide sent to your drive in your maths folder. Use this to Create a slide that shows how you would solve any 3 of the following problems. Have a play around with recording your explanation.
Share your work with Miss Jones and then add it to your blog.
Slide Recordings - Restricted Access - can you change this to 'Allow Acess'