Question

lesson check

1. circle the fact with the same sum as 8 + 7.

10 + 3
10 + 4
10 + 5
10 + 6

1. write a fact with the same sum as 7 + 5.

spiral review

1. write the number shown by 200 + 10 + 7.
2. write the number shown by 15 tens and 6 ones.
3. what is the value of the underlined digit?

65

1. what is another way to write the number 47?

tens ones

Explanation:

Step1: Calculate 8 + 7

$8+7 = 15$

Step2: Calculate each option

$10 + 3=13$; $10 + 4 = 14$; $10+5 = 15$; $10 + 6=16$

Step3: Find the match

The fact with the same sum as 8 + 7 is 10 + 5.

Step4: Calculate 7+5

$7 + 5=12$, a fact with the same sum could be 6 + 6 (since $6+6 = 12$)

Step5: Calculate 200+10 + 7

$200+10 + 7=217$

Step6: Calculate 15 tens and 6 ones

15 tens is $15\times10 = 150$, 6 ones is 6, so the number is $150+6=156$

Step7: Value of under - lined digit in 65 (assuming 6 is underlined)

The value of 6 in 65 is 60 (since it is in the tens place)

Step8: Rewrite 47 in tens and ones

47 can be written as 4 tens and 7 ones

Answer:

1. 10 + 5
2. 6 + 6
3. 217
4. 156
5. 60
6. 4 tens 7 ones