Use knowledge of calculating within 20 to solve problems involving statistics | Maths

Starter quiz

Class 2 make a pictogram to show the number of minibeasts they found in their garden. How many worms did Class 2 find?

'7' ✓
How many woodlice, ladybirds and snails did Class 2 find altogether?

'10' ✓
How many more ants did Class 2 find than worms?

'0' ✓
Izzy, Sam, Alex and Lucas play a game. They make a bar chart of points scored. How many points did Lucas score?

'8' ✓
Izzy, Sam, Alex and Lucas play a game. They make a bar chart of points scored. How many fewer points did Alex score than Lucas?

'1' ✓
Laura, Sofia, Jun and Andeep play a game. They record their points in a table and plan to draw a bar chart. Using the table below, how many more points did Andeep score than Laura?

'4' ✓

Class 2 record their favourite primary colour as a pictogram. How many children chose yellow as their favourite colour?

'12' ✓
Class 2 record their favourite primary colour as a pictogram. How many more children voted for yellow than red?

'6' ✓
Class 2 record their favourite primary colour as a pictogram. How many children in the class voted for their favourite colour altogether?

'20' ✓
Class 2 record their favourite pet as a bar chart. How many children chose fish as their favourite pet?

'8' ✓
Class 2 record their favourite pet as a bar chart. How many children chose either a cat or a dog as their favourite pet?

'14' ✓
Class 2 record their favourite pet as a bar chart. What is the difference between the number of children that chose a fish and the number of children that chose a dog?

'3' ✓

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When adding three addends, it is efficient to first add two addends using a known fact e.g. pair to 10 or double.
When adding, we can bridge 10 by partitioning a part so that we can ‘make 10’.
When subtracting, we can bridge 10 by partitioning a part to create a part that is equal to the ones digit of whole.
The difference can be found through subtraction.

Children may struggle to correctly read the information presented within the pictogram/bar chart.

A ruler can be used to help children line up the top of the bar with the scale. Model this as a strategy to support accurate reading.

Interpret - Understand and give meaning to mathematical data.
Efficient - Not wasting time or effort. An efficient strategy is one we can carry out easily.
Bridge 10 - Addition or subtraction that crosses the 10 boundary.
Difference - The result of subtracting one number from another. Way in which two or more things we are comparing are not the same.