Numbers to 100 and place value – Year 1 maths test answers to download as PDF

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1. Answer to Question 1 (4 marks)

   1. Count the long sticks of ten in the picture: there are 4 tens. (1 mark)
   2. Count the single cubes: there are 7 ones. (1 mark)
   3. 4 tens is 40 and 7 ones is 7, so the number is 40 + 7 = 47. (1 mark)
   4. 47 is written forty-seven, with a hyphen between the tens word and the ones word. (1 mark)

2. Answer to Question 2 (4 marks)

   1. 10 more changes the tens digit from 3 to 4 and the ones stay 1: 41. (1 mark)
   2. 10 less changes the tens digit from 7 to 6 and the ones stay 6: 66. (1 mark)
   3. 1 more than 69: the ones go from 9 to 10, so we make a new ten and get 70. (1 mark)
   4. 1 less than 80: we go back over the ten, from 80 to 79. (1 mark)

3. Answer to Question 3 (4 marks)

   1. The numbers go up in 2s, so after 6 comes 8. (1 mark)
   2. The numbers go up in 5s, so after 10 comes 15. (1 mark)
   3. The numbers go up in 10s, so after 40 comes 50. (1 mark)
   4. The numbers go down in 10s, so after 90 comes 80. (1 mark)

4. Answer to Question 4 (4 marks)

   1. 54 has 5 tens and 45 has only 4 tens, so 54 is bigger: 54 > 45. (1 mark)
   2. 38 has 3 tens and 83 has 8 tens, so 38 is smaller: 38 < 83. (1 mark)
   3. Both numbers are the same, so we write 67 = 67. (1 mark)
   4. 6 has no tens, 26 has 2 tens, and 60 and 62 both have 6 tens, with 0 ones less than 2 ones. The order is 6, 26, 60, 62. (1 mark)

5. Answer to Question 5 (4 marks)

   1. There are 8 rows of 10 trees. Count in tens 8 times: 10, 20, 30, 40, 50, 60, 70, 80. There are 80 trees. (1 mark)
   2. 80 has 8 tens and 35 has 3 tens, so 80 > 35 and the first orchard has more. (1 mark)
   3. 10 more adds 1 ten: 35 + 10 = 45 trees. (1 mark)
   4. 45 has 4 tens and 80 has 8 tens, so 45 is still less than 80. The first orchard still has more trees. (1 mark)

Total : 20 marks