# Column method with regrouping

In year 3, the Bluebirds have been learning how to do column addition with regrouping.

We are given a three digit addition sum on the board and we make it in counters in our hundreds, tens and ones chart. We also write it on our whiteboard, ensuring that the numbers are lined up correctly and in the right column.

We start in the ones column, by putting all our ones together we can see how many there are altogether. If the ones column is more than 10, we can replace 10 ones with a tens counter and regroup the tens into the tens column.   Now, we can add our tens together, moving the counters together and putting the answer in the tens column. Then, we can do the same with our hundreds. Put all the hundred counters together and put our answer in the hundreds column. # Taking away ones from 100 and add ones to 100

This afternoon in Maths, the Bluebirds in year 3 were subtracting ones from 100 and adding ones to 100. First, we used a number line to help us with our subtractions and additions. Then we moved on to number sentences, using our knowledge from the subtraction to help us with our addition.

We even had time for a game of bingo at the end of the lesson. Mrs Sabir said the sum and we had to work out the answer, if that number was on our grid we could cross it off. When all of our numbers were crossed off, we could say Bingo!  At the end of the lesson, an interesting bug was found on one of our sheets, we weren’t sure whether it was a beetle or a kind of ladybug. We named them Bingo and Mrs Sabir let them out into the woodland walk.  # Number bonds to 10 snap!

Today in maths, the Bluebirds were playing number bonds to 10 snap. First we had to cut out our tens frames and then we could play! Our partner put down a number and then we had to put down the number that would make the total to 10 – the first one to snap got the point.

SNAP! We had fun learning and remembering our number bonds to 10. # Equal intervals

This afternoon in Maths, the Bluebirds in Year 3 were adding numbers onto number lines in equal intervals. We had to add the numbers in intervals of 50s and 100s. On the last sheet we had to work out where the midpoint of the number line was and which number would be put there. We had three tasks to complete and went through the answers together on the whiteboard when we had finished.  # Three digit numbers

This afternoon in our Maths lesson, Year 3 Bluebirds were adding numbers together to make three digit numbers. We used the place value arrow cards to help with place value.   The green arrow is the hundreds, the yellow arrow is the tens and the red arrow is the ones. We used the place value arrow cards and put them on top of each other to make the final number.  We had to look at the problem on the board, count in our hundreds, tens and ones and make the number with the place value arrow cards, we also wrote the number on our whiteboards. Today, we looked at how many 10s were in 100. We used a tens frame and counters to help us with our anchor task. We compared 10s and 100s and which character had more, or whether they were equal.

We also compared this to units of measure, looking at centimetres on a ruler that go up in tens, on a meter stick there were ten 10s.

Using our tens frame, we counted more than ten 10s and what number it would make. # Partitioning two digit numbers

Today in Maths, Bluebirds were using dienes to partition two digit numbers in different ways. They tried to make the same number in as many different ways as possible. Children also put the number into a part part whole model to show how they had partitioned the number. # Multiplication Movers!

Bluebirds began sharing equal amounts into groups today as they began their maths unit in multiplication. This afternoon, they practised their four times energetically as they did the Supermovers Dance whilst reciting tables! # Place value – Comparing numbers Bluebirds have been busy securing their knowledge in place value and have been dealing with hundreds, tens and ones. They have been using equipment to represent and compare amounts. They have been looking at numbers represented in different ways including place value counters, dienes, part while models and number tracks today.