Year 5 Maths Challenge 1 13.1.21

Find number bonds to 100 Use pictures to represent number bonds Find missing numbers by adding ones then tens Find missing numbers by subtracting tens then ones

Which of these represent a bond to 10?

Which of these represent a bond to 10?

40

60

100

How many squares has Annie shaded? 40 How many squares has Annie not shaded? 60

43

57 100

How many squares has Tommy shaded? 43 How many squares has Tommy not shaded? 57

80

20

100

61

39

100

Dora, Whitney and Teddy are trying to work out the missing number.

39 61 100

So IThe don’t 39 missing 1have 60 any must number Base be must equal 10 to help to be100 61 me!

I know The missing that 39 1 number is equal must to 40 be 61

The I know missing thatnumber 40 60 is must equalbe to61 100

Work out the missing numbers.

1) 31 69 100 2) 58 42 100 3) 100 92 8 4) 50 50 100 5) 1 99 100

Add ones to reach the next ten Add tens to reach 100

Dora, Whitney and Teddy are trying to work out the missing number.

100 42 58

100 40 is equal to 60

60 2 is equal to 58

So 100 42 must be equal to 58

1)

3)

4)

2) 5)

Further challenge: 1)

2)

1)

3)

4)

2) 5)

Further challenge: 1)

2)