Question

b54a
kumon
addition of 2-digit numbers 2

1. circle the larger number of each pair.

(1) (20, 30) (3) (80, 95)
(2) (42, 38) (4) (62, 26)

1. write the numbers in order, 1, 2, 3 and 4, from the largest to the smallest.

(1) 12 5 48 30
(2) 21 9 18 35
(3) 13 58 40 26

1. fill in the missing numbers in the number sequences.

(1) 2 4 6 8 10
(2) 7 9 11 13 15

Explanation:

Step1: Analyze Sub - question 2(2)

We have the numbers 21, 9, 18, 35. First, we compare the magnitudes of these numbers. 35 is greater than 21, 21 is greater than 18, and 18 is greater than 9. So the order from largest to smallest is 35, 21, 18, 9. So we assign 1 to 35, 2 to 21, 3 to 18, 4 to 9.

Step2: Analyze Sub - question 2(3)

We have the numbers 13, 58, 40, 26. Comparing the magnitudes: 58 is greater than 40, 40 is greater than 26, and 26 is greater than 13. So the order from largest to smallest is 58, 40, 26, 13. So we assign 1 to 58, 2 to 40, 3 to 26, 4 to 13.

Step3: Analyze Sub - question 3(1)

The sequence is 2, 4, 6, _, _. We can see that the pattern is adding 2 each time. So 6 + 2 = 8 and 8+ 2 = 10.

Step4: Analyze Sub - question 3(2)

The sequence is 7, 9, _, _, _. The pattern is adding 2 each time. 9+2 = 11, 11 + 2=13, 13+2 = 15.

Answer:

2. (2)

21: 2; 9: 4; 18: 3; 35: 1

2. (3)

13: 4; 58: 1; 40: 2; 26: 3

3. (1)

The missing numbers are 8 and 10.

3. (2)

The missing numbers are 11, 13 and 15.