# Week beginning 22nd February 2021

## Monday 22nd February 2021

Good morning, Year 4.

This week, we will be taking another look at decimal numbers. The goal for the end of the week is to make you all as comfortable with handling decimals as you are with manipulating whole numbers.

Today, I have attached two versions of a Gattegno grid and two versions of a Place Value grid. I've made a Y4 version of each for all of you to use, which is all you will need to help you with this week's work. However, I've also included Y6 versions that you may want to have a look at if you wanted to push yourself further with some of your own challenges.

LO: To be able to divide by 100.
I can remember to:

- move digits right on a place value grid to divide by 10 and 100.
- move down on a Gattegno grid to divide by 10 and 100.
- check the number zeroes to know how many jumps to make.
- check that you’ve made the number smaller.

## Tuesday 23rd February 2021

Good morning, Year 4.

Today, we'll be using Jigsaw Numbers to add two decimals together to make a whole. I've attached a Jigsaw Numbers resource that uses Numicon to help you - use this for as long as you need it.

LO: To be able to use Jigsaw Numbers to make a whole.
I can remember to:

- make the hundredths digits total 10.
- make the tenths digits total 9.
- use Jigsaw Numbers to help you to Part-Whole and Bar models.

## Wednesday 24th February 2021

Good morning, Year 4.

Today, we are going to use what we practised yesterday to help us to solve problems involving making whole numbers from decimals. You'll see that your Jigsaw Number skills will come in really handy!

Remember to use the Jigsaw Number resources from yesterday's lesson to help you if you're struggling. You can also rewatch yesterday's lesson again if you need a recap.

LO: To be able to use Jigsaw Numbers to make a whole.
I can remember to:

- use your knowledge of Jigsaw Numbers to make one whole.
- use your knowledge of Fact Families to invert calculations.
- explain answers in sentences and with examples.

Wow - you're getting so confident when it come to decimals!

## Thursday 25th February 2021

Good morning, Year 4.

Today, we're looking at what happens when you add or subtract decimals to make numbers larger than one that also have a decimal part. This isn't any different to a mixed number (a whole number and a fraction) except that it's slightly easier to work with because it fits nicely into our base-10 number system.

Daddy ate 2 and three quarter pizzas! Daddy ate 2.75 pizzas! It's just the same, but much easier to write in decimals. Oh, and try sharing the pizza next time, Dad.

LO: To be able to write decimal numbers larger than one.
I can remember to:

- consider exchanges when bridging place value columns.
- use either the column subtraction or numberline method when subtracting.

Well done, everyone. I'm really pleased that you've understood decimals so quickly!

## Friday 26th February 2021

Good morning, Year 4.

During half-term, I received an unexpected, but very interesting letter. Watch the video and I'll tell you all about it.

LO:  To be able to compare numbers of migrants.
I can remember to: