New
New
Year 2

Use knowledge of calculating within 20 to solve problems involving statistics

I can use knowledge of calculating within 20 to solve problems involving statistics

New
New
Year 2

Use knowledge of calculating within 20 to solve problems involving statistics

I can use knowledge of calculating within 20 to solve problems involving statistics

Lesson details

Key learning points

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

Common misconception

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.

Keywords

  • 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.

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Loading...

6 Questions

Q1.
Class 2 make a pictogram to show the number of minibeasts they found in their garden. How many worms did Class 2 find?
An image in a quiz
Correct Answer: 7, seven
Q2.
How many woodlice, ladybirds and snails did Class 2 find altogether?
An image in a quiz
Correct Answer: 10, ten
Q3.
How many more ants did Class 2 find than worms?
An image in a quiz
Correct Answer: 0, zero
Q4.
Izzy, Sam, Alex and Lucas play a game. They make a bar chart of points scored. How many points did Lucas score?
An image in a quiz
Correct Answer: 8, eight
Q5.
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?
An image in a quiz
Correct Answer: 1, one
Q6.
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?
An image in a quiz
Correct Answer: 4, four

6 Questions

Q1.
Class 2 record their favourite primary colour as a pictogram. How many children chose yellow as their favourite colour?
An image in a quiz
Correct Answer: 12, twelve
Q2.
Class 2 record their favourite primary colour as a pictogram. How many more children voted for yellow than red?
An image in a quiz
Correct Answer: 6, six
Q3.
Class 2 record their favourite primary colour as a pictogram. How many children in the class voted for their favourite colour altogether?
An image in a quiz
Correct Answer: 20, twenty
Q4.
Class 2 record their favourite pet as a bar chart. How many children chose fish as their favourite pet?
An image in a quiz
Correct Answer: 8, eight
Q5.
Class 2 record their favourite pet as a bar chart. How many children chose either a cat or a dog as their favourite pet?
An image in a quiz
Correct Answer: 14, fourteen
Q6.
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?
An image in a quiz
Correct Answer: 3, three