Week 1:
Question 1:
481 + 1,099 = 1,580
Keep thousand
400 + 0 = 400
80 + 90 = 170
1 + 9 = 10
400 + 170 + 10 = 580.....
Then add a thousand!! Answer: 1,580
Question 2:
733 - 498 = 365
700 - 400 = 300
30 - 90 = 60
3 - 8 = 5
300 + 30 + 5 = 365!
Answer: 335
Question 3:
47 Divided by 7 = 7
7x7 = 47
Answer: 7
Question 4:
12 x 5 = 60
10 x 5 = 50
2 x 5 = 10
50 + 10 = 60
Answer: 60
Question 5:
109 + 559 = 668
100 + 500 = 600
50 + 0 = 50
9 + 9 = 18
600 + 50 + 18 = 668
Answer: 668
Question: 6
605 - 597 = 8
600 - 500 = 100
90 - 100 = 10
7 - 5 = 2
10 - 2 = 8
Answer: 8
Question 7:
132 Divided by 11 = 12
11 x 12 = 132
Answer: 132
Question 8:
15 x 9 = 135
10 x 9 = 90
9 x 5 = 45
90 + 45 = 135
Answer: 135
Question 9:
150 Divided by 10 = 15
15 x 10 = 150
Answer: 15
Question 10:
312 - 451 = 141
300 - 400 = 100
10 - 50 = 40
2 - 1 = 1
100 + 40 + 1 = 141
Answer: 141
Week 2:
Question 1:
171 + 3,209 = 3,380
Keep the three thousand
100 + 200 = 300
70 + 0 = 70
1 + 9 = 10
3000 + 300 + 70 + 10 = 3,380
Question 2:
1,533 - 431 = 1102
Keep the thousand
500 - 400 = 100
30 - 30 = 0
3 - 1 = 2
Add the thousand
1,000 + 100 + 0 + 2 = 1,102
Question 3:
64 divided by 8 = 8
8 x 8 = 64
Question 4:
12 x 9 = 108
10 x 9 = 90
2 x 9 = 18
90 + 18 = 108
Question 5:
1,169 + 259 = 1428
Keep the thousand
100 + 200 = 300
60 + 50 = 110
9 + 9 = 18
1,000 + 300 + 110 = 1,410
1,410 + 18 = 1,428
Question 6:
835 - 317 = 522
800 - 300 = 500
30 - 10 = 20
5 - 7 = 2
500 + 20 + 2 = 522
Question 7:
120 divided by 5 = 24
20 x 5 = 100
5 x 4 = 20
100 + 20 = 120
Question 8:
15 x 3 = 45
10 x 3 = 30
5 x 3 = 15
30 + 15 = 45
Question 9:
144 divided by 12 = 12
2 x 2 = 4
12 x 2 = 24
12 x 10 = 120
120 + 24 = 144
Question 10:
882 - 371 = 511
800 - 300 = 500
80 - 70 = 10
2 - 1 = 1
500 + 10 + 1 = 511
Yes I agree with all
Week 3:
Question 1: 911 + 199 = 1,110
900 + 100 = 1,000
99 + 11 = 110
1,000 + 110= 1,110
Question 2: 910 - 668 = 358
900 - 600 = 300
60 - 10 = 50
0 - 8 = 8
300 + 50 + 8 = 358
Question 3: 56 ÷ 7 = 8
7 × 5 = 35
7 x 6 = 42
7 x 7 = 49
7 x 8 = 56
Question 4:
12 × 15 = 180
12 × 12 = 144
12 × 13 = 156
12 × 14 = 168
12 × 15 = 180
Question 5:
859 - 417 = 442
800 - 400 = 400
50 - 10 = 40
9 - 7 = 2
400 + 40 + 2 = 442
Question 6:
859 - 417 = 442
800 - 400 = 400
50 - 10 = 40
9 - 7 = 2
400 + 40 + 2 = 442
Question 7:
90 divided by 10 = 9
10 x 9 = 90
Question 8:
15 x 3 =
10 x 3 = 30
5 x 3 = 15
30 + 15 = 45
Question 9:
45 divided by 5 = 9
5 x 5 = 25
5 x 4 = 20
20 + 25 = 45
Question 10:
958 - 516 = 442
900 - 500 = 400
50 - 10 = 40
8 - 6 = 2
400 + 40 + 2 = 442
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