Numbers to 20 and Strategies: math practice, Grade 1 – download the PDF

1 Counting on from 6 ★★★

Start at 6 and count on 5 times. Write every number you say. What number do you land on?

2 Ten and some ones ★★★

Fill in each blank.

1. \(10 + 6 = \square\)
2. \(15 = 10 + \square\)
3. \(10 + 9 = \square\)
4. 12 is one ten and \(\square\) ones.

3 Missing numbers ★★★

Write the missing numbers.

1. 9, 10, \(\square\), 12, 13, \(\square\), 15
2. 18, 19, 20, \(\square\), 22, \(\square\)

4 Easy doubles ★★★

Solve these doubles.

1. \(3 + 3\)
2. \(4 + 4\)
3. \(6 + 6\)
4. \(7 + 7\)
5. \(9 + 9\)

5 Counting back ★★★

Count back to find each answer.

1. \(15 - 3\)
2. \(18 - 2\)
3. \(12 - 4\)
4. \(20 - 1\)

6 Sticker collection ★★★

Nina has 9 stickers. Her grandma gives her 4 more. How many stickers does Nina have now?

7 Count the counters ★★★

Look at the two ten-frames. How many counters are there? Write it as a ten and some ones.

8 True or false? ★★★

Say if each statement is true or false.

1. \(10 + 5 = 15\)
2. \(12 = 10 + 3\)
3. \(16 - 10 = 6\)

9 Make ten ★★★

Use the make-ten strategy. Write the steps.

1. \(9 + 4\)
2. \(8 + 6\)
3. \(7 + 5\)

10 Near doubles ★★★

Use a double to solve each near double.

1. \(6 + 7\)
2. \(8 + 9\)
3. \(5 + 6\)
4. \(7 + 8\)

11 Think addition ★★★

Use addition to solve each subtraction. Write the addition you thought of.

1. \(14 - 9\)
2. \(13 - 8\)
3. \(16 - 7\)
4. \(12 - 5\)

12 Fact family ★★★

Use the numbers 6, 8 and 14. Write four facts, two additions and two subtractions.

13 Frog on the number line ★★★

A frog sits on 8 and hops forward 6 times, one number each hop. Where does the frog land? Use the number line to help.

14 Muffin trays ★★★

A baker puts 7 muffins on one tray and 8 muffins on another tray. How many muffins are there? Use a near double.

15 Which is more? ★★★

Which sum is greater, \(8 + 5\) or \(7 + 7\)? Solve both and explain.

16 Find the missing number ★★★

Find the number that goes in the box.

1. \(7 + \square = 15\)
2. \(\square + 6 = 13\)
3. \(9 + \square = 18\)

17 Marbles in a bag ★★★

Omar has 18 marbles. He gives 5 marbles to his sister. Then he finds 3 marbles under his bed. How many marbles does Omar have in the end?

18 Find the mistake ★★★

Leo says: “\(6 + 7 = 12\) because \(6 + 6 = 12\).” Is Leo right? Explain and give the correct answer.

19 Three numbers to make ten ★★★

Look for two numbers that make 10 first. Then find each total.

1. \(6 + 4 + 5\)
2. \(7 + 3 + 8\)
3. \(5 + 9 + 5\)

20 Which ones make 16? ★★★

Circle every expression that is equal to 16: \(8 + 8\), \(9 + 6\), \(10 + 6\), \(20 - 4\), \(18 - 3\), \(17 - 1\).

21 Two secret numbers ★★★

Two numbers add up to 13. One number is 1 more than the other. What are the two numbers?

22 The school bus ★★★

There are 12 children on a bus. At the first stop, 5 children get off. At the next stop, 6 children get on. How many children are on the bus now?