+ 2 more key words
134 prompts matching "Subtraction – checking with addition"
Worked Example: Making 1,000 on a Number Line
I am in Primary 3. Worked example: Show me how to find how many more to make 1,000 from 78
Spot My Strategy Choice Mistake
I am in Primary 3. Choose a slow method for a subtraction on purpose — counting back 40 on
Worked Example: Filling a 5-Litre Drum
I am in Primary 3. Worked example: Show me how to find how much more to fill a 5 L drum if
Read Quarter Past on a Clock
Act as my tutor. I am in Primary 3. Show me a clock face with the hour hand between 3 and
Spot My Money Counting Mistake
I am in Primary 3. Count a pile of naira notes and coins for me and count one of the coins
Find Change from 500 or 1,000 Naira
Act as my tutor. I am in Primary 3. Give me a problem where I need to give change from ₦50
Spot My Inverse-Check Mistake
I am in Primary 3. Spot my inverse-check mistake: I’ll check an addition by subtracting. S
Library Books Four-Digit Word Problem
I am in Primary 3. Let’s solve a word problem: “There are 5,000 books in a library. 2,378
Explain My Multiplication Strategy
I am in Primary 3. I will solve a 2-digit × 1-digit multiplication problem and tell you wh
2-Digit Division Quick-Fire Quiz
Act as a quiz-master. I am in Primary 3. Ask me quick 2-digit ÷ 1-digit questions (with an
Spot My Fraction Operation Mistake
I am in Primary 3. Spot my fraction operation mistake: I’ll add or subtract fractions with
Name a Decimal as Tenths
Act as my tutor. I am in Primary 3. Show me a decimal with one decimal place (e.g., 0.3).
Floor Tiles Area Word Problem
I am in Primary 3. Let’s solve a word problem: “A floor is covered with 20 square tiles. A
Spot The step that must come first, and why Mistake
Act as my Primary 3 Mathematics tutor. Work a question on the step that must come first, a