Adding Numbers without Regrouping

Free sample questions, a clear explanation, and 5 practice skills with an AI tutor that guides without giving the answer away.

Sample questions

1. Maya has 12 building blocks. Her friend gives her 3 more blocks. If Maya puts all her blocks together, how many blocks does she have in total?

○ 12

✓ 15

○ 5

○ 42

Answer: 15 — Think about using tens and ones blocks. Start with 1 ten block and 2 one blocks. Then add 3 more one blocks. How many one blocks do you have now? How many tens?

2. There are 24 red apples and 5 green apples in a basket. How many apples are there altogether?

○ 24

○ 9

✓ 29

○ 74

Answer: 29 — Imagine you have 2 bundles of ten apples and 4 single apples. Then add 5 more single apples. Count all the single apples first, then add them to your bundles of ten.

3. A baker made 31 cookies in the morning. He made 6 more cookies in the afternoon. How many cookies did he make all day?

○ 31

○ 7

○ 91

✓ 37

Answer: 37 — You can use counters or drawing. Draw 3 groups of ten and 1 counter. Then draw 6 more counters. How many counters do you have in total?

Skills in this topic

Add a 2-digit number to a 1-digit number without regrouping using concrete materials
Add two 2-digit numbers without regrouping using place value charts (Pictorial)
Add a 3-digit number to a 1-digit or 2-digit number without regrouping
Add two 3-digit numbers without regrouping using the standard algorithm
Create an addition problem involving two 3-digit numbers that does NOT require regrouping, and explain why it's simpler

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