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
66 − 10 = ______
3 × 10 = ______
79 + 20 = ______
7 × 10 = ______
70 − 10 = ______
72 − 10 = ______
77 + 10 = ______
51 − 10 = ______
41 + 20 = ______
50 − 10 = ______
78 + 20 = ______
76 + 10 = ______
6 × 10 = ______
88 + 20 = ______
26 − 10 = ______
9 × 10 = ______
60 + 10 = ______
11 + 20 = ______
25 + 20 = ______
91 − 10 = ______
