Finding the total, or sum, by combining two or more numbers.

Solve problems by adding and subtracting tens and ones

Maths

In this unit pupils will compare two 2-digit numbers and partition a 2-digit number into 10s and 1s and position on a number line. In the future unit pupils will find a 2-digit number and a 1 or 2-digit number that compose 100.  Pupils will position 3-digit numbers on a number line and estimate the position of 3-digit numbers on unmarked number lines. They will compare and order 3 digit numbers.

In the prior unit pupils explained that items could be compared using length and height, weight/mass and volume/capacity. They compared sets of objects using equality/inequality symbols. In this unit pupils will compare two 2-digit numbers and partition a 2-digit number into 10s and 1s and position on a number line.

Comparing, ordering and partitioning 2-digit numbers

Which bar model matches this story? There were 43 bees in the hive. 40 of them flew away. How many were left?

Which problem does this bar model represent?

There are 37 children in the park. 7 children are wearing hats. How many children are not wearing hats? Which equation matches this problem?

Tick the problems that will use a subtraction to solve.

Laura had 60 shells. She found two more. How many does she have now?

Jun had 60 sticks. He lost 2     How many does he have left?

Andeep had 66 p. He spent 60 p on a pear. How much does he have left?

Which of the following equations are represented by this part-part-whole model?

Which part-part-whole model represents 49 = 40 + 9

The following equations are correct. True or False. 39 = 9 + 30,   39 - 30 = 9,   30 + 9 = 39 and 9 = 39 - 30

Which of the following completes the equation correctly? 80 = {{ }} - 4 

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