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Maths · Grade 2 · Set B
Jumps on the number line
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B
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Goal: 15 min
Score/ 12
Remember: Jump the tens, then the ones. Count the spaces between the marks, not the marks.

Read and jump

Jump the tens, then the ones. Count the spaces, not the marks.

1
The dot is on .
2
Where is the dot? Write its number:
3
40 + 50: Pip jumps five tens. Where does Pip land?
4
73 − 28: Pip jumps back 20, then back 8. Where does Pip land?
5
These jumps start at 36. Which sum do they show?
36 + 2036 + 2736 + 7
6
Pip jumps 3 to make ten, then 5 more. What is 7 + 8?
7
Pip jumps from 46 up to 71. How many did Pip jump in all?
8
15 − 9: Pip jumps back 5 to make ten, then back 4. Where does Pip land?
9
The dot is on 61.
TrueFalse
10
50 + 30 lands on 70.
TrueFalse
11
Join each sum to its jumps.
  1. 134 + 30
  2. 234 + 3
  3. 334 + 33
  • Ajump 3 tens, then 3 ones
  • Bjump 3 tens
  • Cjump 3 ones
12
Show 47 + 36 in jumps. Put the steps in order.
  • Jump 3 to 83
  • Jump 30 to 77
  • Start at 47
  • Jump 3 to 80
13
Draw jumps on the line to show 52 + 17. Start at 52.
14
Tell how you find 61 − 35 using jumps.
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Answer key · Set B
Jumps on the number line
126 The marks go up by one. From 25, count on 1 mark: 26.
277 From 75, count on 2 marks: 76, 77.
390 Five tens are 50. 40, 50, 60, 70, 80, 90.
445 73 take away 20 is 53. Then 53 take away 8 is 45.
536 + 27 The jumps are 20 and 7. 20 and 7 make 27, so it is 36 + 27.
615 7 and 3 make 10. 10 and 5 more make 15.
725 Add the jumps: 4 and 20 and 1 make 25.
86 15 take away 5 is 10. Then 10 take away 4 is 6.
9True The dot is one mark past 60. It is on 61.
10False 30 is three tens. Three jumps of ten land on 80.
111-B, 2-C, 3-A
124, 2, 1, 3 Start first, then take the big jump of tens, then the ones in two small jumps.
14Your own words: a grown-up reads it.
Mark each answer, count the right ones and write the score on the sheet.