Five pages of taking away with pictures, every one starting from a number between 11 and 20. On page 1 the pictures sit in a double ten frame next to an equation like 14 − 5; students cross out 5 pictures and write how many are left. Page 2 shows pictures in rows of five with some already crossed out, and students write the whole sentence: how many there were, how many are crossed out, how many are left. Page 3 gives only the equation: students draw circles for the first number in an empty box, cross some out and write the answer. Page 4 asks how many animals are hiding. There are 15 ducks, 8 can be seen and the rest are behind a bush, so 8 + ___ = 15 and 15 − 8 = ___ have the same answer. Page 5 has six short picture stories (frogs jump off a log, birds fly off a wire, apples fall from a tree) to turn into subtraction sentences. Each page starts with a worked example.
Before page 1, build 14 on a double ten frame with counters and take 5 away: first the 4 in the second frame, then 1 more from the full ten. Ask what is left (9) and how the full ten helped. For page 4, hide some counters under a cup and have partners say the addition and the subtraction that find them. Page 5 works well read aloud, with children acting out the frogs and birds.
Line up 12 to 20 small things, like crackers, coins or toy cars, and take some away. Ask how many are left and have your child say the number sentence. For hiding, cover some with a napkin: "There are 15. I can see 8. How many are under the napkin?"
This pack supports the following Common Core State Standards for Mathematics:
© Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.
A 5-page subtraction pack for 1st grade that takes away from groups of 11 to 20. Cross out pictures in a double ten frame and write how many are left, then write the whole subtraction sentence for pictures that are already crossed out. Draw circles for the first number, cross some out and write the answer. Find how many animals are hiding behind a bush, in a cave or under a blanket by thinking addition, and write a subtraction sentence for short picture stories about frogs, birds, apples and penguins. Every page comes in color and in black and white. Answer keys included.
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