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
39 + 20 = ______
2 × 10 = ______
86 + 20 = ______
28 + 10 = ______
37 − 10 = ______
21 + 20 = ______
41 − 10 = ______
40 + 20 = ______
5 × 10 = ______
60 + 10 = ______
33 + 10 = ______
70 + 10 = ______
1 × 10 = ______
76 − 10 = ______
83 + 10 = ______
36 − 10 = ______
11 + 10 = ______
34 + 20 = ______
7 × 10 = ______
4 × 10 = ______
