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
42 + 10 = ______
39 − 10 = ______
65 + 20 = ______
8 × 10 = ______
2 × 10 = ______
27 − 10 = ______
43 + 20 = ______
90 − 10 = ______
9 × 10 = ______
12 + 10 = ______
73 + 10 = ______
72 + 20 = ______
13 + 10 = ______
3 × 10 = ______
82 + 20 = ______
76 + 20 = ______
44 − 10 = ______
64 − 10 = ______
21 + 10 = ______
7 × 10 = ______
