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
1 × 10 = ______
4 × 10 = ______
77 + 10 = ______
27 − 10 = ______
58 − 10 = ______
44 − 10 = ______
67 + 20 = ______
9 × 10 = ______
70 + 10 = ______
15 + 10 = ______
73 − 10 = ______
87 + 20 = ______
63 + 20 = ______
81 − 10 = ______
23 − 10 = ______
78 + 10 = ______
3 × 10 = ______
37 + 10 = ______
55 + 20 = ______
75 − 10 = ______
