Grade 1 Math · Level 2, Add & Subtract to 20
Break Apart to Subtract Through 10
How the lesson starts: Break Apart to Subtract Through 10
Momo's bananas
Hi friend! This is Momo the monkey. Momo has 14 bananas. Yum! Momo eats 6 of them. How many are left? Let's find out a smart way!
Eat the loose ones first
Look at Momo's bananas. 1 big bunch of 10. And 4 loose bananas. Momo eats the 4 loose ones first. 14 − 4 = 10. A friendly 10!
Fill the box
14 − 6 = 14 − 4 − □. Momo ate 4. He must eat 6 in all. 6 is 4 and 2. So 2 more! The box is 2. 10 − 2 = 8. Watch out! The box is not 6.