Wobbly Life · Fan RallyGrade 3 · 8 stops

Controller down. Brain turbo on.

Mission:
Math Rally!

A go-kart. Lots of tens. And you at the wheel. Drive the route stop by stop!

Two yellow Wobbly characters race a go-kart along a seaside track. — Pause your Switch 2.
Math turbo on!

Name Date

Short on time? Express route (about 25 min): Stop 1 A+B → 2 A → 3 A → 5 (box 4) → 7 (case 1) → 8 (round A)

Tablet tip: In the mental math trainer you practice with big buttons, hints and a 10-problem test.

Open the trainer

Mental math · make a ten

Ten Buddies

Two numbers that make 10 together are ten buddies. They help you jump over any ten in a flash.

Who belongs together?

1 + 92 + 83 + 74 + 65 + 5

7 += 10

4 += 10

9 += 10

2 += 10

6 += 10

8 += 10

3 += 10

5 += 10

Eight pairs.

Count on to the next ten

The ones need their ten buddy. 48 + 2 = 50, because 8 + 2 = 10.

48 += 50

76 += 80

33 += 40

61 += 70

85 += 90

27 += 30

54 += 60

19 += 20

Eight problems.

Split the number

5 = 2 +

7 = 4 +

8 = 3 +

9 = 5 +

Four numbers.

Stop 1 doneBuddies found

Math Rally · stop 2Adding across a ten

Adding across a ten

Jump to the Ten

For 48 + 5 you don’t go in one go. You make a stop at the ten first.

How the ten jump works 1. Jump to the next ten (48 + 2 = 50).
2. Jump the rest (50 + 3 = 53).
To do this, split the 5: 5 = 2 + 3.

+ 2

50ten

+ 3

With a stop at the ten

a)85 + 8 = 85 ++=

b)78 + 4 = 78 ++=

c)67 + 5 = 67 ++=

d)39 + 7 = 39 ++=

e)56 + 9 = 56 ++=

f)26 + 8 = 26 ++=

First box: up to the ten.

On the number line

47 + 6 = ?

ten

68 + 5 = ?

ten

Fill in the jumps and the numbers.

Now in your head

58 + 6 =

37 + 9 =

74 + 8 =

29 + 6 =

46 + 7 =

83 + 9 =

65 + 8 =

18 + 5 =

49 + 3 =

77 + 6 =

35 + 9 =

88 + 4 =

Eight problems.

Stop 2 doneJump pro

Math Rally · stop 3Subtracting across a ten

Subtracting across a ten

Jump Back

With minus you jump backwards. The stop at the ten helps here too.

How the jump back works 1. Jump back to the ten (53 − 3 = 50).
2. Jump back the rest (50 − 2 = 48).
Split the 5: 5 = 3 + 2.

− 2

50ten

− 3

With a stop at the ten

a)42 − 6 = 42 −−=

b)71 − 4 = 71 −−=

c)64 − 7 = 64 −−=

d)35 − 8 = 35 −−=

e)93 − 5 = 93 −−=

First box: back to the ten.

On the number line (backwards)

62 − 5 = ?

−

ten

−

81 − 7 = ?

−

ten

−

Jump from right to left.

Now in your head

91 − 3 =

54 − 8 =

33 − 6 =

82 − 7 =

45 − 9 =

76 − 8 =

61 − 5 =

27 − 9 =

Eight problems.

Check trick: Add back to check. 53 − 5 = 48, because 48 + 5 = 53.

Stop 3 doneBackwards ace

Math Rally · stop 4Strategies

Strategies for adding and subtracting

Strategy Workshop

Build big problems from small steps. Three tools for your toolbox.

Step by step: tens first, then ones

47 + 36: 47 + 30 = 77 → 77 + 6 = 83

a)47 + 36:47 + 30 =→ … + 6 =

b)29 + 45:29 + 40 =→ … + 5 =

c)56 + 28:56 + 20 =→ … + 8 =

Three problems.

Place value: tens + tens, ones + ones

47 + 36: 40 + 30 = 70, 7 + 6 = 13 → 70 + 13 = 83

a)38 + 46:30 + 40 =8 + 6 =→ together

b)65 + 27:60 + 20 =5 + 7 =→ together

Two problems.

Subtract step by step

a)83 − 36:83 − 30 =→ … − 6 =

b)72 − 45:72 − 40 =→ … − 5 =

c)91 − 58:91 − 50 =→ … − 8 =

Three problems.

Use a friendly number: the 9 trick

a)46 + 9 = 46 + 10 − 1 =

b)73 − 9 = 73 − 10 + 1 =

c)38 + 19 = 38 + 20 − 1 =

d)85 − 19 = 85 − 20 + 1 =

Four problems.

Stop 4 doneTool pro

Math Rally · stop 5Find patterns

Find the pattern · frog patterns

Frog Patterns

The frog hops from problem to problem. What changes? Solve, write the next problem and choose.

Solve, hop on, find the pattern

Below the dashed line, write the next problem. On the lines write: +1, −1, +10, −10 or stays the same.

🐸 Box 1

46 + 5 =

47 + 5 =

48 + 5 =

1st number always

2nd number always

Answer always

🐸 Box 2

38 + 4 =

48 + 4 =

58 + 4 =

1st number always

2nd number always

Answer always

🐸 Box 3

27 + 6 =

28 + 5 =

29 + 4 =

1st number always

2nd number always

Answer always

🐸 Box 4

52 − 4 =

53 − 5 =

54 − 6 =

−=

1st number always

2nd number always

Answer always

🐸 Box 5

81 − 3 =

71 − 3 =

61 − 3 =

−=

1st number always

2nd number always

Answer always

🐸 Box 6

45 − 7 =

45 − 8 =

45 − 9 =

−=

1st number always

2nd number always

Answer always

Six boxes. Line 4 is the next problem in the pattern.

Tricky: why?

In box 4 the answer is always 48. Explain why.

Stop 5 donePattern frog

Math Rally · stop 6Times and divide

Multiplication and division

Times Table Bakery

In the island bakery everything stands in neat rows. Perfect for multiplying!

How many cupcakes are on the tray?

Look at the picture above: 3 rows, 4 cupcakes in each row.

3 × 4 =

Turnaround fact:4 × 3 =

Two problems.

Multiplication blitz

4 × 6 =

7 × 5 =

3 × 8 =

9 × 2 =

6 × 6 =

8 × 4 =

5 × 9 =

7 × 3 =

Eight problems.

Division

20 ÷ 4 =

35 ÷ 5 =

18 ÷ 3 =

24 ÷ 6 =

40 ÷ 8 =

27 ÷ 3 =

Six problems.

Fact families: three numbers, four facts

3 7 21

3 × 7 =

7 × 3 =

21 ÷ 3 =

21 ÷ 7 =

5 8 40

5 × 8 =

8 × 5 =

40 ÷ 5 =

40 ÷ 8 =

Two families.

Double and halve

double 14 =

double 25 =

double 37 =

double 48 =

half of 36 =

half of 50 =

half of 84 =

half of 70 =

Eight problems.

Stop 6 doneBaker ace

Math Rally · stop 7Read, solve, answer

Word problems

Detective Cases

Read carefully like a detective. What is the question? Then solve and answer with a sentence.

Detective plan 1. Read: What do I know? What is the question? 2. N = number sentence: number, sign, number, answer. 3. A = write an answer sentence.

Case 1

48 people are on the Wobbly bus. At the stop, 7 more people get on. How many people are on the bus now?

Case 2

Pixel has 63 coins. She buys an ice cream for 6 coins. How many coins does she have left?

Case 3

Wobbi packs 4 parcels. Each parcel gets 5 balls. How many balls are there in all?

Case 4

Pro: The fishing boat catches 36 fish in the morning and 27 fish in the afternoon. Wobbi lets 9 fish go. How many fish are left?

Compare your answer sentences with the answer key.

Stop 7 doneCase closed

Math Rally · stop 8Finish line ahead!

Mental math like a test · 10 problems

Lightning Rally

Each round has 10 problems, like a mental math quiz. Do one round a day and watch yourself get better!

How it works: Round A without a timer: think of the ten jump for every problem. From round B on you can time yourself (goal: 3 minutes). Then compare with the answer key and write how many you got right.

Round ADate: ______

28 + 4 =

58 + 4 =

17 − 8 =

71 − 8 =

65 + 8 =

39 + 7 =

34 + 8 =

32 − 5 =

52 + 9 =

14 + 8 =

I got – out of 10 right.

Round BDate: ______

84 − 8 =

63 + 9 =

89 + 3 =

15 + 8 =

75 − 8 =

36 − 7 =

14 + 7 =

24 + 8 =

64 + 8 =

28 + 3 =

I got – out of 10 right.

Round CDate: ______

67 + 7 =

18 + 4 =

17 + 6 =

15 − 7 =

83 + 8 =

28 − 9 =

79 + 7 =

68 + 7 =

49 + 8 =

21 − 3 =

I got – out of 10 right.

Color in a star for every round with 8 or more right:

Stop 8 doneRally champion

Extra · on a tablet or computer

Mental Math Trainer

Pick what to practice and tap your answer. If you make a mistake, the trainer shows you the ten jump.

Practice mode

Let’s go!

0right

0streak

0best

Test: 10 problems

Like a mental math test: 10 problems, with a timer.

Your last tests:

–

The check buttons count correct boxes. Compare answer sentences and explanations with the answer key yourself.

ANSWER KEY · Try first, then compare.

Math Rally · Answers 1 / 2Try first, then compare

Answers: stops 1 to 4

1 · Ten Buddies

A 7+3 · 4+6 · 9+1 · 2+8 · 6+4 · 8+2 · 3+7 · 5+5
B 48+2=50 · 76+4=80 · 33+7=40 · 61+9=70 · 85+5=90 · 27+3=30 · 54+6=60 · 19+1=20
C 5=2+3 · 7=4+3 · 8=3+5 · 9=5+4

2 · Ten Jump

A 85+8 = 85+5+3 = 93
78+4 = 78+2+2 = 82
67+5 = 67+3+2 = 72
39+7 = 39+1+6 = 46
56+9 = 56+4+5 = 65
26+8 = 26+4+4 = 34
B 47+6: +3 → 50, +3 → 53 · 68+5: +2 → 70, +3 → 73
C 58+6=64 · 37+9=46 · 74+8=82 · 29+6=35 · 46+7=53 · 83+9=92 · 65+8=73 · 18+5=23 · 49+3=52 · 77+6=83 · 35+9=44 · 88+4=92

Typical mistake: 48 + 5 = 43. The ten was forgotten. When you cross a ten, the tens digit always goes up by 1.

3 · Jump Back

A 42−6 = 42−2−4 = 36
71−4 = 71−1−3 = 67
64−7 = 64−4−3 = 57
35−8 = 35−5−3 = 27
93−5 = 93−3−2 = 88
B 62−5: −2 → 60, −3 → 57 · 81−7: −1 → 80, −6 → 74
C 91−3=88 · 54−8=46 · 33−6=27 · 82−7=75 · 45−9=36 · 76−8=68 · 61−5=56 · 27−9=18

Typical mistake: 53 − 5 = 52 (doing 5 − 3 instead of 3 − 5). Fix: jump back to the ten first.

4 · Workshop

A 47+30=77, +6 → 83 · 29+40=69, +5 → 74 · 56+20=76, +8 → 84
B 30+40=70, 8+6=14 → 84 · 60+20=80, 5+7=12 → 92
C 83−30=53, −6 → 47 · 72−40=32, −5 → 27 · 91−50=41, −8 → 33
D 46+9=55 · 73−9=64 · 38+19=57 · 85−19=66

Math Rally · Answers 2 / 2Mistakes show the way

Answers: stops 5 to 8

5 · Frog Patterns

1: 51, 52, 53; next 49 + 5 = 54 (+1, stays the same, +1)
2: 42, 52, 62; next 68 + 4 = 72 (+10, stays the same, +10)
3: 33, 33, 33; next 30 + 3 = 33 (+1, −1, stays the same)
4: 48, 48, 48; next 55 − 7 = 48 (+1, +1, stays the same)
5: 78, 68, 58; next 51 − 3 = 48 (−10, stays the same, −10)
6: 38, 37, 36; next 45 − 10 = 35 (stays the same, +1, −1)

B Both numbers get 1 bigger. The difference between them stays the same, so the answer stays 48. (Box 3: the 1st number gets 1 bigger and the 2nd 1 smaller, so the sum stays 33.)

6 · Bakery

A 3 × 4 = 12, 4 × 3 = 12
B 4×6=24 · 7×5=35 · 3×8=24 · 9×2=18 · 6×6=36 · 8×4=32 · 5×9=45 · 7×3=21
C 20÷4=5 · 35÷5=7 · 18÷3=6 · 24÷6=4 · 40÷8=5 · 27÷3=9
D 3×7=21, 7×3=21, 21÷3=7, 21÷7=3
5×8=40, 8×5=40, 40÷5=8, 40÷8=5
E double 14 = 28 · double 25 = 50 · double 37 = 74 · double 48 = 96
half of 36 = 18 · half of 50 = 25 · half of 84 = 42 · half of 70 = 35

7 · Detective Cases

1: 48 + 7 = 55. There are 55 people on the bus now.
2: 63 − 6 = 57. She has 57 coins left.
3: 4 × 5 = 20. There are 20 balls.
4: 36 + 27 = 63, 63 − 9 = 54. 54 fish are left.

8 · Lightning Rally

A: 28+4=32 · 58+4=62 · 17−8=9 · 71−8=63 · 65+8=73 · 39+7=46 · 34+8=42 · 32−5=27 · 52+9=61 · 14+8=22
B: 84−8=76 · 63+9=72 · 89+3=92 · 15+8=23 · 75−8=67 · 36−7=29 · 14+7=21 · 24+8=32 · 64+8=72 · 28+3=31
C: 67+7=74 · 18+4=22 · 17+6=23 · 15−7=8 · 83+8=91 · 28−9=19 · 79+7=86 · 68+7=75 · 49+8=57 · 21−3=18

For grown-ups: what helps most

Ten buddies (stop 1) need to be lightning fast. They are the base for every crossing.
When there is a mistake, have the child explain out loud: “To the ten it’s …, then … more.” Don’t just correct the answer.
10 minutes every day beats one hour once. One rally round or a few minutes of the trainer a day is enough.
Don’t forbid finger counting, but show the ten jump as the faster way.

Unofficial fan learning material inspired by Wobbly Life. Not affiliated with Wobbly Life or Nintendo. The rally story is fictional. Free for personal use.

Mission:Math Rally!

Ten Buddies

Who belongs together?

Count on to the next ten

Split the number

Jump to the Ten

With a stop at the ten

On the number line

Now in your head

Jump Back

With a stop at the ten

On the number line (backwards)

Now in your head

Strategy Workshop

Step by step: tens first, then ones

Place value: tens + tens, ones + ones

Subtract step by step

Use a friendly number: the 9 trick

Frog Patterns

Solve, hop on, find the pattern

Tricky: why?

Times Table Bakery

How many cupcakes are on the tray?

Multiplication blitz

Division

Fact families: three numbers, four facts

Double and halve

Detective Cases

Case 1

Case 2

Case 3

Case 4

Lightning Rally

Round ADate: ______

Round BDate: ______

Round CDate: ______

Mental Math Trainer

Test: 10 problems

Answers: stops 1 to 4

1 · Ten Buddies

2 · Ten Jump

3 · Jump Back

4 · Workshop

Answers: stops 5 to 8

5 · Frog Patterns

6 · Bakery

7 · Detective Cases

8 · Lightning Rally

For grown-ups: what helps most

Mission:
Math Rally!