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
49 + 20 = ______
62 + 20 = ______
3 × 10 = ______
88 − 10 = ______
73 − 10 = ______
77 + 10 = ______
5 × 10 = ______
29 + 20 = ______
60 + 10 = ______
50 − 10 = ______
54 − 10 = ______
94 − 10 = ______
54 + 10 = ______
69 − 10 = ______
74 + 10 = ______
11 + 20 = ______
35 − 10 = ______
74 + 20 = ______
80 + 20 = ______
8 × 10 = ______
