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
50 + 20 = ______
11 + 20 = ______
84 + 10 = ______
87 + 20 = ______
60 + 10 = ______
40 + 10 = ______
5 × 10 = ______
45 + 10 = ______
51 + 10 = ______
89 − 10 = ______
1 × 10 = ______
92 − 10 = ______
4 × 10 = ______
12 + 20 = ______
21 − 10 = ______
49 + 20 = ______
59 − 10 = ______
33 − 10 = ______
90 − 10 = ______
55 + 10 = ______
