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
33 + 10 = ______
77 − 10 = ______
69 + 10 = ______
53 − 10 = ______
3 × 10 = ______
52 − 10 = ______
59 + 20 = ______
13 + 20 = ______
86 + 20 = ______
44 − 10 = ______
73 + 10 = ______
21 + 20 = ______
24 + 20 = ______
2 × 10 = ______
92 − 10 = ______
78 − 10 = ______
64 + 20 = ______
38 + 20 = ______
83 + 10 = ______
7 × 10 = ______
