Bài tập toán cơ bản số 21

Created by T Madas Question Evaluate the following giving the final answer in its simplest form without using mixed numbers 2+ = 10 10 2−4= 9 4×3 = ÷ = 28 15 1+ =6 10 2− = 12 12 3ì8 = 3 ữ = 18 12 + = 19 15 − = 11 24 5ì1 = 32 2ữ5 = 3+2 = 17 12 7−9 16 8× =2 20 ÷ 40 5+3 29 = 12 5 − 12 15 × =6 10 ÷ = 14 1+ 16 5× 15 = 97 11 ÷ 14 = 11 5+3 8 × 34 = 94 11 = 16 = 49 24 9−3 = 12 = 24 51 = 28 − 10 11 = 90 × = 15 18 × 12 21 = 10 ÷2 = 12 12 ÷ 12 =6 = 75 ÷ 12 =2 Question Evaluate the following giving the final answer in its simplest form using mixed numbers where appropriate 12 + = 12 11 + = 12 11 + = 6 11 +1 = 4 −1 = 4 14 − 83 = 78 =1 35 − 110 13 − 34 = 12 39 = 85 × 43 = 32 32 ×21 3 = 63 85 × 16 128 × 57 = 57 =87 1 56 × = 11 =52 95 ÷ 23 =3 77 = 56 × 12 = 12 12 23 ÷ = 95 ÷ 15 = 32 = 2 113 26 15 15 73 ÷ 12 = 34 49 ì23 25 ữ = 53 = 12 = 21 Created by T Madas Created by T Madas Question Evaluate the following giving the final answer in its simplest form =4 3 = 3 4 16 =4 2 =3 × 4 − 14 = 2 ÷7 = 10 49 + 34 11 = − 34 1+3 − 14 1+1 =2 1+1 1+3 1−2 1+ 4+ 3+1 − 43 × 12 + 12 × 53 + 1×3 2 =6 3×2 −1 3 70 = 93 ÷ 15 113 26 = 73 ÷ 12 19 =2 3+2+ 20 ×23 Created by T Madas = 37 + =1 × 10 = 15 × 2 5 = 25 ÷ 25