Critical thinking for grade 3

Critical thinking for grade 3

By Joseph Manso

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Brenda has a jar of gumballs. In the jar are 42 red gumballs and 27 yellow

gumballs.

What is the total number of gumballs in the jar?

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If Brenda removes 23 gumballs from the jar, how many will she have left?

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After removing 23 gumballs from the jar, Brenda adds 12 purple gumballs and 33

green gumballs. How many total gumballs are in the jar now?

Multiple Choice

Anabel buys 15 tomato plants and 22 pepper plants. She thinks she has

15 + 22 = 38 total plants. Is she correct?

• YEs

• No

Multiple Choice

Mykal and Lin bought 68 party invitations and mailed out 46 of them. Lin says they

have 68 – 46 = 22 invitations left. Is he correct?

• Yes

• No

Opposite Operations on a Number Line

Some text here about the topic of discussion

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Mr. Dolby has 15 students in his class. Ms. Avila has 30 students in her class. Ms.

Schmidt has 28 students in her class. How many total students are in the 3 classes?

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In Mr. Dolby’s class, 13 students turned in their homework. In Ms. Avila’s class, 18

students turned in their homework. In Ms. Schmidt’s class, 17 students turned in their

homework. How many total students turned in their homework?