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
26 − 10 = ______
55 − 10 = ______
52 + 10 = ______
70 − 10 = ______
78 + 20 = ______
89 + 10 = ______
44 + 20 = ______
9 × 10 = ______
79 − 10 = ______
57 + 10 = ______
61 − 10 = ______
6 × 10 = ______
37 − 10 = ______
60 + 20 = ______
1 × 10 = ______
51 + 20 = ______
77 − 10 = ______
3 × 10 = ______
50 + 10 = ______
40 + 10 = ______
