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
47 + 20 = ______
17 + 10 = ______
1 × 10 = ______
52 − 10 = ______
33 − 10 = ______
71 + 10 = ______
3 × 10 = ______
5 × 10 = ______
76 + 20 = ______
79 + 10 = ______
43 − 10 = ______
9 × 10 = ______
94 − 10 = ______
83 + 10 = ______
41 − 10 = ______
11 + 20 = ______
52 + 20 = ______
14 + 10 = ______
68 + 20 = ______
27 + 10 = ______
