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Number Trail Grade 1 / Week 05 / Monday
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Week 05 · Find the missing number

Monday

Find the missing part
// Riley's number puzzles
⏱ about 15 min

Monday: Find the missing part

Riley the Raccoon brings a lantern and a puzzle.

"Bennie, I have 3 acorns," says Riley.

"I need 5. How many more do I need?"

Learn it: count on to the whole

A ? hides a number.

Look at 3 + ? = 5.

3 is a part. 5 is the whole.

Bennie starts at 3. He counts on, "4, 5."

He said 2 numbers. The missing part is 2.

A ten-frame with three red counters and two gold counters

3 red and 2 gold make 5. So 3 + 2 = 5.

FIND THE MISSING PART
  • Read the question.
  • Tap your answer.
A ten-frame with three counters3 + ? = 5
A ten-frame with four counters4 + ? = 6
A ten-frame with five counters5 + ? = 7
A ten-frame with six counters6 + ? = 8

Hop on a number line

Put your finger on the part you know.

Hop to the whole.

Count your hops. That is the missing part.

Hops on a number line from 4 to 7

From 4 to 7 is 3 hops. So 4 + 3 = 7.

COUNT THE HOPS
  • Read the question.
  • Tap your answer.
A number line from 0 to 10, with hops from 4 to 74 + ? = 7
A number line from 0 to 10, with hops from 6 to 96 + ? = 9
A number line from 0 to 10, with hops from 2 to 82 + ? = 8
A number line from 0 to 10, with hops from 5 to 105 + ? = 10
PuzzleTrue or false?
3 + ? = 5: is ? 2??
1 + ? = 4: is ? 2??
6 + ? = 10: is ? 4??
7 + ? = 8: is ? 3??
WHY THIS EXERCISECount on from the part to the whole.
RILEY'S PUZZLE STORIES
  • Read the question.
  • Tap your answer.
shellRiley has 4 shells. He finds more. Now he has 6. How many did he find?
acornBennie has 5 acorns. He needs 9. How many more does he need?
duckThere are 2 ducks in the pond. More come. Now there are 7. How many came?
Try it
Put 6 spoons on a table.
Ask a grown-up to hide some under a cup.
Count the spoons you can see.
How many are hiding? Lift the cup to check.

Word Spot: him, his

Here are new sight words.

Look at each word. Say it. Spell it.

Him: H-I-M.

His: H-I-S.

FIND THE WORD
  • Listen to the word.
  • Tap it.
Find the word you hear.
Find the word you hear.
Find the word you hear.
Find the word you hear.
FILL THE GAP
  • Listen to the sentence.
  • Tap the missing word.
Please give ___ the map.
He put on ___ hat.

Great puzzle work! Tomorrow we find missing numbers in taking away.