Answer: C. There are four groups of three tens and six ones
Step-by-step explanation:
From the options,
A. Three groups each have three tens and 4 ones.
Three tens and 4 ones equal: = (3 × 10) + (4 × 1) = 30 + 4 = 34
Therefore, 34 ÷ 3 is incorrect.
B. There are three groups of five tens and 9 ones in each group.
Five tens and 9 ones will be equal to:
= (5 × 10) + (9 × 1)
= 50 + 9 = 59
Therefore, 59 ÷ 3 is incorrect
C. There are four groups of three tens and six ones.
Three tens and six ones equal:
= (3 × 10) + (6 × 1)
= 30 + 6 = 36
Therefore, 36 ÷ 4 is correct
D. There are three groups of five tens and nine ones in each group.
Five tens and nine ones will be equal to:
= (5 × 10) + (9 × 1)
= 50 + 9 = 59
Therefore, 59 ÷ 3 is incorrect
Therefore, the correct option is C.