Calculate these mentally. (a) 76 − 15 − 8
5
(b) 19 + 43 + 7
(c) 8 × 3 − 2
(d) 15 − 3 × 4
(e) 8 ÷ 2 + 3
(f) 42 − 9 − 5
6 Write a number sentence for these word problems.
(a) I buy 4 pens that cost $2 each. I pay with a $10 note. What is my change? (b) I invite 8 friends to my party. I buy 4 sweets for each friend. I also buy an extra 5 sweets to give as prizes. How many sweets do I buy?
Target This is a game for 2–4 players. You will practise your mental calculation. You will need a die. Each player rolls the die 4 times. Record your digits in your book. Your teacher will give you a two-digit target number.
7 6
Each player uses their 4 digits to get as close to the target as possible in one minute. You can use all 4 operations.
8
SK_G5_SB_01_002-015.indd 8
01/12/2021 15:03
Made with FlippingBook Learn more on our blog