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
86 + 20 = ______
14 + 10 = ______
4 × 10 = ______
20 + 10 = ______
98 − 10 = ______
12 + 20 = ______
13 + 10 = ______
3 × 10 = ______
49 − 10 = ______
23 − 10 = ______
50 + 20 = ______
7 × 10 = ______
84 − 10 = ______
60 − 10 = ______
52 + 20 = ______
97 − 10 = ______
2 × 10 = ______
77 − 10 = ______
48 − 10 = ______
33 + 10 = ______
