Composition of 100 in 50s, 25s and 20s

Maths

In this unit pupils will use known facts to find multiples of ten that compose 100  and use known facts to find complements to 100.  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 reviewed and secured previous knowledge of add 3 addends, understanding they can be added in any order, bridging through 10. In this unit pupils will use known facts to find multiples of ten that compose 100  and use known facts to find complements to 100.

Securing place value to 100 and applying to addition and subtraction

100 can be decomposed into how many tens?

100 can be composed of 4 equal parts. How many ones are in each part?

One hundred is composed of five equal parts. How many ones are in each part?

Complete the calculation: 100 = 25 x {{ }}

If 100 decomposed into ten equal parts there will be {{ }} in each part.

Starter Quiz