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Maths · Grade 2 · Set C
Jumps on the number line: a step further
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C
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Goal: 15 min
Score/ 12
Remember: Jump to the next ten, then 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
97 + 26: Pip jumps 3 to 100, then 20, then 3. Where does Pip land?
4
104 − 27: Pip jumps back 4 to 100, then back 23. Where does Pip land?
5
58 + 36: Pip jumps 2 to make 60, then 30, then 4. Where does Pip land?
6
Pip jumps from 36 up to 91. Which jumps does Pip make?
+4, +40, +1+6, +50, +5+4, +50, +1
7
Pip jumps from 68 up to 112. How many did Pip jump in all?
8
142 − 36: Pip jumps back 2, then back 30, then back 4. Where does Pip land?
9
The jumps show 52 + 27 = 79.
TrueFalse
10
The jumps show 70 − 24 = 56.
TrueFalse
11
Join each story to its sum.
  1. 1Start at 50, jump 30 on
  2. 2Start at 80, jump 30 back
  3. 3Start at 30, jump 50 on
  • A50 + 30
  • B30 + 50
  • C80 − 30
12
Show 85 − 47 in jumps. Put the steps in order.
  • Start at 85
  • Jump back 5 to 40
  • Jump back 40 to 45
  • Jump back 2 to 38
13
Draw jumps on the line to show 78 + 15. Start at 78.
14
Tell how you find 91 − 56 using jumps.
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Answer key · Set C
Jumps on the number line: a step further
155 The marks go up by five. From 50, count on 1 mark: 55.
2107 From 105, count on 2 marks: 106, 107.
3123 97 and 3 make 100. 100 and 20 make 120. 120 and 3 make 123.
477 104 take away 4 is 100. Then 100 take away 23 is 77.
594 58 and 2 make 60. 60 and 30 make 90. 90 and 4 make 94.
6+4, +50, +1 4 and 50 and 1 make 55, and 36 and 55 make 91.
744 Add the jumps: 2 and 40 and 2 make 44.
8106 142 take away 2 is 140. Then 110. Then 106.
9True 52 and 20 make 72. 72 and 7 make 79.
10False 70 take away 20 is 50. Then 50 take away 4 is 46, not 56.
111-A, 2-C, 3-B
121, 3, 2, 4 Start first, take the big jump back of tens, then take 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.