Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
45 + 10 = ______
31 + 20 = ______
56 − 10 = ______
68 + 20 = ______
52 − 10 = ______
68 + 10 = ______
47 + 20 = ______
81 − 10 = ______
50 + 10 = ______
67 + 20 = ______
79 + 20 = ______
24 − 10 = ______
6 × 10 = ______
75 + 10 = ______
94 − 10 = ______
3 × 10 = ______
21 + 20 = ______
49 − 10 = ______
15 + 10 = ______
56 + 10 = ______
